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SMB/CIFS file, print, and login server for Unix

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general

source: samba (main)
version: 2:4.17.5+dfsg-2
maintainer: Debian Samba Maintainers (archive) (DMD)
uploaders: Michael Tokarev [DMD] – Steve Langasek [DMD] – Andrew Bartlett [DMD] – Mathieu Parent [DMD] – Jelmer Vernooĳ [DMD]
arch: all any
std-ver: 4.6.2
VCS: Git (Browse, QA)

versions [more versions can be listed by madison] [old versions available from snapshot.debian.org]

[pool directory]

o-o-stable: 2:4.5.16+dfsg-1+deb9u2
o-o-sec: 2:4.5.16+dfsg-1+deb9u4
oldstable: 2:4.9.5+dfsg-5+deb10u3
old-sec: 2:4.9.5+dfsg-5+deb10u3
stable: 2:4.13.13+dfsg-1~deb11u5
stable-sec: 2:4.13.13+dfsg-1~deb11u5
stable-bpo: 2:4.17.5+dfsg-1~bpo11+1
testing: 2:4.17.5+dfsg-2
unstable: 2:4.17.5+dfsg-2
exp: 2:4.18.0~rc2+dfsg-1

versioned links

2:4.5.16+dfsg-1+deb9u2: [.dsc, use dget on this link to retrieve source package] [changelog] [copyright] [rules] [control]
2:4.5.16+dfsg-1+deb9u4: [.dsc, use dget on this link to retrieve source package] [changelog] [copyright] [rules] [control]
2:4.9.5+dfsg-5+deb10u1: [.dsc, use dget on this link to retrieve source package] [changelog] [copyright] [rules] [control]
2:4.9.5+dfsg-5+deb10u3: [.dsc, use dget on this link to retrieve source package] [changelog] [copyright] [rules] [control]
2:4.13.13+dfsg-1~deb11u5: [.dsc, use dget on this link to retrieve source package] [changelog] [copyright] [rules] [control]
2:4.17.5+dfsg-1~bpo11+1: [.dsc, use dget on this link to retrieve source package] [changelog] [copyright] [rules] [control]
2:4.17.5+dfsg-2: [.dsc, use dget on this link to retrieve source package] [changelog] [copyright] [rules] [control]
2:4.18.0~rc1+dfsg-1exp: [.dsc, use dget on this link to retrieve source package] [changelog] [copyright] [rules] [control]
2:4.18.0~rc2+dfsg-1: [.dsc, use dget on this link to retrieve source package] [changelog] [copyright] [rules] [control]

binaries

ctdb
ldb-tools
libldb-dev
libldb2
libnss-winbind
libpam-winbind (1 bugs: 0, 1, 0, 0)
libsmbclient
libsmbclient-dev (1 bugs: 0, 0, 1, 0)
libwbclient-dev
libwbclient0
python3-ldb
python3-ldb-dev
python3-samba
registry-tools
samba (36 bugs: 0, 29, 7, 0)
samba-ad-dc
samba-ad-provision
samba-common (3 bugs: 0, 3, 0, 0)
samba-common-bin (3 bugs: 0, 2, 1, 0)
samba-dev
samba-dsdb-modules
samba-libs
samba-testsuite
samba-vfs-modules (2 bugs: 0, 2, 0, 0)
smbclient (8 bugs: 0, 5, 3, 0)
winbind (5 bugs: 0, 5, 0, 0)

action needed

1 security issue in sid high

There is 1 open security issue in sid.

1 important issue:

CVE-2018-14628: An information leak vulnerability was discovered in Samba's LDAP server. Due to missing access control checks, an authenticated but unprivileged attacker could discover the names and preserved attributes of deleted objects in the LDAP store.

Created: 2023-01-14 Last update: 2023-02-07 04:54

45 security issues in buster high

There are 45 open security issues in buster.

12 important issues:

CVE-2022-1615: In Samba, GnuTLS gnutls_rnd() can fail and give predictable random values.
CVE-2022-3437: A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and unwrap_des3() routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI library allow a length-limited write buffer overflow on malloc() allocated memory when presented with a maliciously small packet. This flaw allows a remote user to send specially crafted malicious data to the application, possibly resulting in a denial of service (DoS) attack.
CVE-2018-14628: An information leak vulnerability was discovered in Samba's LDAP server. Due to missing access control checks, an authenticated but unprivileged attacker could discover the names and preserved attributes of deleted objects in the LDAP store.
CVE-2021-20251:
CVE-2022-32742: A flaw was found in Samba. Some SMB1 write requests were not correctly range-checked to ensure the client had sent enough data to fulfill the write, allowing server memory contents to be written into the file (or printer) instead of client-supplied data. The client cannot control the area of the server memory written to the file (or printer).
CVE-2022-32743: Samba does not validate the Validated-DNS-Host-Name right for the dNSHostName attribute which could permit unprivileged users to write it.
CVE-2022-37966: Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability.
CVE-2022-37967: Windows Kerberos Elevation of Privilege Vulnerability.
CVE-2022-38023: Netlogon RPC Elevation of Privilege Vulnerability.
CVE-2022-42898: PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has "a similar bug."
CVE-2022-44640: Heimdal before 7.7.1 allows remote attackers to execute arbitrary code because of an invalid free in the ASN.1 codec used by the Key Distribution Center (KDC).
CVE-2022-45141:

25 issues postponed or untriaged:

CVE-2016-2124: (needs triaging) A flaw was found in the way samba implemented SMB1 authentication. An attacker could use this flaw to retrieve the plaintext password sent over the wire even if Kerberos authentication was required.
CVE-2020-1472: (needs triaging) An elevation of privilege vulnerability exists when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller, using the Netlogon Remote Protocol (MS-NRPC), aka 'Netlogon Elevation of Privilege Vulnerability'.
CVE-2021-3671: (needs triaging) A null pointer de-reference was found in the way samba kerberos server handled missing sname in TGS-REQ (Ticket Granting Server - Request). An authenticated user could use this flaw to crash the samba server.
CVE-2021-3738: (needs triaging) In DCE/RPC it is possible to share the handles (cookies for resource state) between multiple connections via a mechanism called 'association groups'. These handles can reference connections to our sam.ldb database. However while the database was correctly shared, the user credentials state was only pointed at, and when one connection within that association group ended, the database would be left pointing at an invalid 'struct session_info'. The most likely outcome here is a crash, but it is possible that the use-after-free could instead allow different user state to be pointed at and this might allow more privileged access.
CVE-2022-0336: (needs triaging) The Samba AD DC includes checks when adding service principals names (SPNs) to an account to ensure that SPNs do not alias with those already in the database. Some of these checks are able to be bypassed if an account modification re-adds an SPN that was previously present on that account, such as one added when a computer is joined to a domain. An attacker who has the ability to write to an account can exploit this to perform a denial-of-service attack by adding an SPN that matches an existing service. Additionally, an attacker who can intercept traffic can impersonate existing services, resulting in a loss of confidentiality and integrity.
CVE-2022-2031: (needs triaging) A flaw was found in Samba. The security vulnerability occurs when KDC and the kpasswd service share a single account and set of keys, allowing them to decrypt each other's tickets. A user who has been requested to change their password, can exploit this flaw to obtain and use tickets to other services.
CVE-2019-10218: (needs triaging) A flaw was found in the samba client, all samba versions before samba 4.11.2, 4.10.10 and 4.9.15, where a malicious server can supply a pathname to the client with separators. This could allow the client to access files and folders outside of the SMB network pathnames. An attacker could use this vulnerability to create files outside of the current working directory using the privileges of the client user.
CVE-2019-14833: (needs triaging) A flaw was found in Samba, all versions starting samba 4.5.0 before samba 4.9.15, samba 4.10.10, samba 4.11.2, in the way it handles a user password change or a new password for a samba user. The Samba Active Directory Domain Controller can be configured to use a custom script to check for password complexity. This configuration can fail to verify password complexity when non-ASCII characters are used in the password, which could lead to weak passwords being set for samba users, making it vulnerable to dictionary attacks.
CVE-2019-14847: (needs triaging) A flaw was found in samba 4.0.0 before samba 4.9.15 and samba 4.10.x before 4.10.10. An attacker can crash AD DC LDAP server via dirsync resulting in denial of service. Privilege escalation is not possible with this issue.
CVE-2019-14861: (needs triaging) All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue, where the (poorly named) dnsserver RPC pipe provides administrative facilities to modify DNS records and zones. Samba, when acting as an AD DC, stores DNS records in LDAP. In AD, the default permissions on the DNS partition allow creation of new records by authenticated users. This is used for example to allow machines to self-register in DNS. If a DNS record was created that case-insensitively matched the name of the zone, the ldb_qsort() and dns_name_compare() routines could be confused into reading memory prior to the list of DNS entries when responding to DnssrvEnumRecords() or DnssrvEnumRecords2() and so following invalid memory as a pointer.
CVE-2019-14870: (needs triaging) All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue, where the S4U (MS-SFU) Kerberos delegation model includes a feature allowing for a subset of clients to be opted out of constrained delegation in any way, either S4U2Self or regular Kerberos authentication, by forcing all tickets for these clients to be non-forwardable. In AD this is implemented by a user attribute delegation_not_allowed (aka not-delegated), which translates to disallow-forwardable. However the Samba AD DC does not do that for S4U2Self and does set the forwardable flag even if the impersonated client has the not-delegated flag set.
CVE-2019-14902: (needs triaging) There is an issue in all samba 4.11.x versions before 4.11.5, all samba 4.10.x versions before 4.10.12 and all samba 4.9.x versions before 4.9.18, where the removal of the right to create or modify a subtree would not automatically be taken away on all domain controllers.
CVE-2019-14907: (needs triaging) All samba versions 4.9.x before 4.9.18, 4.10.x before 4.10.12 and 4.11.x before 4.11.5 have an issue where if it is set with "log level = 3" (or above) then the string obtained from the client, after a failed character conversion, is printed. Such strings can be provided during the NTLMSSP authentication exchange. In the Samba AD DC in particular, this may cause a long-lived process(such as the RPC server) to terminate. (In the file server case, the most likely target, smbd, operates as process-per-client and so a crash there is harmless).
CVE-2019-19344: (needs triaging) There is a use-after-free issue in all samba 4.9.x versions before 4.9.18, all samba 4.10.x versions before 4.10.12 and all samba 4.11.x versions before 4.11.5, essentially due to a call to realloc() while other local variables still point at the original buffer.
CVE-2020-10704: (postponed; to be fixed through a stable update) A flaw was found when using samba as an Active Directory Domain Controller. Due to the way samba handles certain requests as an Active Directory Domain Controller LDAP server, an unauthorized user can cause a stack overflow leading to a denial of service. The highest threat from this vulnerability is to system availability. This issue affects all samba versions before 4.10.15, before 4.11.8 and before 4.12.2.
CVE-2020-10730: (postponed; to be fixed through a stable update) A NULL pointer dereference, or possible use-after-free flaw was found in Samba AD LDAP server in versions before 4.10.17, before 4.11.11 and before 4.12.4. Although some versions of Samba shipped with Red Hat Enterprise Linux do not support Samba in AD mode, the affected code is shipped with the libldb package. This flaw allows an authenticated user to possibly trigger a use-after-free or NULL pointer dereference. The highest threat from this vulnerability is to system availability.
CVE-2020-10745: (postponed; to be fixed through a stable update) A flaw was found in all Samba versions before 4.10.17, before 4.11.11 and before 4.12.4 in the way it processed NetBios over TCP/IP. This flaw allows a remote attacker could to cause the Samba server to consume excessive CPU use, resulting in a denial of service. This highest threat from this vulnerability is to system availability.
CVE-2020-10760: (postponed; to be fixed through a stable update) A use-after-free flaw was found in all samba LDAP server versions before 4.10.17, before 4.11.11, before 4.12.4 used in a AC DC configuration. A Samba LDAP user could use this flaw to crash samba.
CVE-2020-14303: (postponed; to be fixed through a stable update) A flaw was found in the AD DC NBT server in all Samba versions before 4.10.17, before 4.11.11 and before 4.12.4. A samba user could send an empty UDP packet to cause the samba server to crash.
CVE-2020-14318: (needs triaging) A flaw was found in the way samba handled file and directory permissions. An authenticated user could use this flaw to gain access to certain file and directory information which otherwise would be unavailable to the attacker.
CVE-2020-14323: (needs triaging) A null pointer dereference flaw was found in samba's Winbind service in versions before 4.11.15, before 4.12.9 and before 4.13.1. A local user could use this flaw to crash the winbind service causing denial of service.
CVE-2020-14383: (needs triaging) A flaw was found in samba's DNS server. An authenticated user could use this flaw to the RPC server to crash. This RPC server, which also serves protocols other than dnsserver, will be restarted after a short delay, but it is easy for an authenticated non administrative attacker to crash it again as soon as it returns. The Samba DNS server itself will continue to operate, but many RPC services will not.
CVE-2021-20254: (needs triaging) A flaw was found in samba. The Samba smbd file server must map Windows group identities (SIDs) into unix group ids (gids). The code that performs this had a flaw that could allow it to read data beyond the end of the array in the case where a negative cache entry had been added to the mapping cache. This could cause the calling code to return those values into the process token that stores the group membership for a user. The highest threat from this vulnerability is to data confidentiality and integrity.
CVE-2022-32744: (needs triaging) A flaw was found in Samba. The KDC accepts kpasswd requests encrypted with any key known to it. By encrypting forged kpasswd requests with its own key, a user can change other users' passwords, enabling full domain takeover.
CVE-2022-32746: (needs triaging) A flaw was found in the Samba AD LDAP server. The AD DC database audit logging module can access LDAP message values freed by a preceding database module, resulting in a use-after-free issue. This issue is only possible when modifying certain privileged attributes, such as userAccountControl.

8 ignored issues:

CVE-2021-3670: MaxQueryDuration not honoured in Samba AD DC LDAP
CVE-2020-25718: A flaw was found in the way samba, as an Active Directory Domain Controller, is able to support an RODC (read-only domain controller). This would allow an RODC to print administrator tickets.
CVE-2020-25719: A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication. The Samba AD DC, could become confused about the user a ticket represents if it did not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total domain compromise.
CVE-2020-25721: Kerberos acceptors need easy access to stable AD identifiers (eg objectSid). Samba as an AD DC now provides a way for Linux applications to obtain a reliable SID (and samAccountName) in issued tickets.
CVE-2020-25722: Multiple flaws were found in the way samba AD DC implemented access and conformance checking of stored data. An attacker could use this flaw to cause total domain compromise.
CVE-2021-20316: A flaw was found in the way Samba handled file/directory metadata. This flaw allows an authenticated attacker with permissions to read or modify share metadata, to perform this operation outside of the share.
CVE-2021-43566: All versions of Samba prior to 4.13.16 are vulnerable to a malicious client using an SMB1 or NFS race to allow a directory to be created in an area of the server file system not exported under the share definition. Note that SMB1 has to be enabled, or the share also available via NFS in order for this attack to succeed.
CVE-2021-44141: All versions of Samba prior to 4.15.5 are vulnerable to a malicious client using a server symlink to determine if a file or directory exists in an area of the server file system not exported under the share definition. SMB1 with unix extensions has to be enabled in order for this attack to succeed.

Created: 2022-07-04 Last update: 2023-02-07 04:54

14 security issues in bullseye high

There are 14 open security issues in bullseye.

8 important issues:

CVE-2022-3437: A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and unwrap_des3() routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI library allow a length-limited write buffer overflow on malloc() allocated memory when presented with a maliciously small packet. This flaw allows a remote user to send specially crafted malicious data to the application, possibly resulting in a denial of service (DoS) attack.
CVE-2021-20251:
CVE-2022-37966: Windows Kerberos RC4-HMAC Elevation of Privilege Vulnerability.
CVE-2022-37967: Windows Kerberos Elevation of Privilege Vulnerability.
CVE-2022-38023: Netlogon RPC Elevation of Privilege Vulnerability.
CVE-2022-42898: PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has "a similar bug."
CVE-2022-44640: Heimdal before 7.7.1 allows remote attackers to execute arbitrary code because of an invalid free in the ASN.1 codec used by the Key Distribution Center (KDC).
CVE-2022-45141:

4 issues left for the package maintainer to handle:

CVE-2021-3670: (needs triaging) MaxQueryDuration not honoured in Samba AD DC LDAP
CVE-2022-1615: (postponed; to be fixed through a stable update) In Samba, GnuTLS gnutls_rnd() can fail and give predictable random values.
CVE-2018-14628: (needs triaging) An information leak vulnerability was discovered in Samba's LDAP server. Due to missing access control checks, an authenticated but unprivileged attacker could discover the names and preserved attributes of deleted objects in the LDAP store.
CVE-2022-32743: (needs triaging) Samba does not validate the Validated-DNS-Host-Name right for the dNSHostName attribute which could permit unprivileged users to write it.

You can find information about how to handle these issues in the security team's documentation.

2 ignored issues:

CVE-2021-20316: A flaw was found in the way Samba handled file/directory metadata. This flaw allows an authenticated attacker with permissions to read or modify share metadata, to perform this operation outside of the share.
CVE-2021-44141: All versions of Samba prior to 4.15.5 are vulnerable to a malicious client using a server symlink to determine if a file or directory exists in an area of the server file system not exported under the share definition. SMB1 with unix extensions has to be enabled in order for this attack to succeed.

Created: 2022-07-04 Last update: 2023-02-07 04:54

1 security issue in bookworm high

There is 1 open security issue in bookworm.

1 important issue:

CVE-2018-14628: An information leak vulnerability was discovered in Samba's LDAP server. Due to missing access control checks, an authenticated but unprivileged attacker could discover the names and preserved attributes of deleted objects in the LDAP store.

Created: 2023-01-14 Last update: 2023-02-07 04:54

The VCS repository is not up to date, push the missing commits. high

vcswatch reports that the current version of the package is not in its VCS.
Either you need to push your commits and/or your tags, or the information about the package's VCS are out of date. A common cause of the latter issue when using the Git VCS is not specifying the correct branch when the packaging is not in the default one (remote HEAD branch), which is usually "master" but can be modified in salsa.debian.org in the project's general settings with the "Default Branch" field). Alternatively the Vcs-Git field in debian/control can contain a "-b <branch-name>" suffix to indicate what branch is used for the Debian packaging.

Created: 2023-01-21 Last update: 2023-02-04 17:47

1 bug tagged patch in the BTS normal

The BTS contains patches fixing 1 bug, consider including or untagging them.

Created: 2022-10-24 Last update: 2023-02-07 11:03

Build log checks report 2 warnings low

Build log checks report 2 warnings

Created: 2023-01-27 Last update: 2023-01-27 19:00

testing migrations

This package will soon be part of the auto-openldap transition. You might want to ensure that your package is ready for it. You can probably find supplementary information in the debian-release archives or in the corresponding release.debian.org bug.

news

[2023-02-07] samba 2:4.17.5+dfsg-2 MIGRATED to testing (Debian testing watch)
[2023-02-04] Accepted samba 2:4.17.5+dfsg-2 (source) into unstable (Michael Tokarev)
[2023-02-01] Accepted samba 2:4.18.0~rc2+dfsg-1 (source) into experimental (Michael Tokarev)
[2023-01-28] samba 2:4.17.5+dfsg-1 MIGRATED to testing (Debian testing watch)
[2023-01-27] Accepted samba 2:4.17.5+dfsg-1~bpo11+1 (source) into bullseye-backports (Michael Tokarev)
[2023-01-27] Accepted samba 2:4.17.5+dfsg-1 (source) into unstable (Michael Tokarev)
[2023-01-21] Accepted samba 2:4.18.0~rc1+dfsg-1exp (source) into experimental (Michael Tokarev)
[2023-01-14] Accepted samba 2:4.17.4+dfsg-3~bpo11+1 (source) into bullseye-backports (Michael Tokarev)
[2023-01-13] Accepted samba 2:4.17.4+dfsg-3 (source) into unstable (Michael Tokarev)
[2023-01-02] Accepted samba 2:4.17.4+dfsg-2~bpo11+1 (source amd64 all) into bullseye-backports (Debian FTP Masters) (signed by: Michael Tokarev)
[2022-12-24] samba 2:4.17.4+dfsg-2 MIGRATED to testing (Debian testing watch)
[2022-12-19] Accepted samba 2:4.17.4+dfsg-2 (source) into unstable (Michael Tokarev)
[2022-12-15] Accepted samba 2:4.17.4+dfsg-1 (source) into unstable (Michael Tokarev)
[2022-12-15] Accepted samba 2:4.17.3+dfsg-4 (source amd64 all) into unstable (Debian FTP Masters) (signed by: Michael Tokarev)
[2022-12-04] Accepted samba 2:4.17.3+dfsg-3~bpo11+1 (source) into bullseye-backports (Michael Tokarev)
[2022-12-04] samba 2:4.17.3+dfsg-3 MIGRATED to testing (Debian testing watch)
[2022-12-01] Accepted samba 2:4.17.3+dfsg-3 (source) into unstable (Michael Tokarev)
[2022-11-24] Accepted samba 2:4.17.3+dfsg-2~bpo11+1 (source) into bullseye-backports (Michael Tokarev)
[2022-11-24] samba 2:4.17.3+dfsg-2 MIGRATED to testing (Debian testing watch)
[2022-11-21] Accepted samba 2:4.17.3+dfsg-2 (source) into unstable (Michael Tokarev)
[2022-11-19] Accepted samba 2:4.17.3+dfsg-1~bpo11+1 (source) into bullseye-backports (Michael Tokarev)
[2022-11-19] samba 2:4.17.3+dfsg-1 MIGRATED to testing (Debian testing watch)
[2022-11-15] Accepted samba 2:4.17.3+dfsg-1 (source) into unstable (Michael Tokarev)
[2022-11-06] Accepted samba 2:4.17.2+dfsg-9 (source) into unstable (Michael Tokarev)
[2022-11-06] samba 2:4.17.2+dfsg-8 MIGRATED to testing (Debian testing watch)
[2022-11-03] Accepted samba 2:4.17.2+dfsg-8 (source) into unstable (Michael Tokarev)
[2022-11-02] Accepted samba 2:4.17.2+dfsg-7 (source) into unstable (Michael Tokarev)
[2022-11-02] Accepted samba 2:4.17.2+dfsg-6 (source) into unstable (Michael Tokarev)
[2022-11-02] Accepted samba 2:4.17.2+dfsg-5 (source) into unstable (Michael Tokarev)
[2022-11-01] Accepted samba 2:4.17.2+dfsg-4 (source) into unstable (Michael Tokarev)

1
2

bugs [bug history graph]

all: 63 64
RC: 0
I&N: 50
M&W: 13 14
F&P: 0
patch: 1

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[Information about Ubuntu for Debian Developers]

version: 2:4.17.3+dfsg-3ubuntu2
342 bugs (7 patches)
patches for 2:4.17.3+dfsg-3ubuntu2

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