-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Format: 1.8 Date: Fri, 21 Apr 2023 20:15:13 CEST Source: curl Architecture: source Version: 7.64.0-4+deb10u6 Distribution: buster-security Urgency: high Maintainer: Alessandro Ghedini <ghedo@debian.org> Changed-By: Markus Koschany <apo@debian.org> Checksums-Sha1: 54cbba01e563375dbedcf5c610a651e2243575c8 2845 curl_7.64.0-4+deb10u6.dsc 778f48aabc388fc378f45ce007027b7e4503b625 62540 curl_7.64.0-4+deb10u6.debian.tar.xz be6352b67e66c04c988892b340e1321888cdd158 11986 curl_7.64.0-4+deb10u6_amd64.buildinfo Checksums-Sha256: ce14e22c43f23f505624b39b8bc0225ecd6ee8dbdd84ac5bd47cd9df5779648e 2845 curl_7.64.0-4+deb10u6.dsc 63c961ed2d37600d6cd904dd5723409af60c0e9483341c9c1de39bf6da62f550 62540 curl_7.64.0-4+deb10u6.debian.tar.xz b565378b6dc4612d2436462ee824da88ea7c7b13d546821f8377d6863e6ea551 11986 curl_7.64.0-4+deb10u6_amd64.buildinfo Changes: curl (7.64.0-4+deb10u6) buster-security; urgency=high . * Non-maintainer upload by the LTS team. * Fix CVE-2023-27533: A vulnerability in input validation exists in curl during communication using the TELNET protocol may allow an attacker to pass on maliciously crafted user name and "telnet options" during server negotiation. The lack of proper input scrubbing allows an attacker to send content or perform option negotiation without the application's intent. This vulnerability could be exploited if an application allows user input, thereby enabling attackers to execute arbitrary code on the system. * Fix CVE-2023-27535: An authentication bypass vulnerability exists in libcurl in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain FTP settings such as CURLOPT_FTP_ACCOUNT, CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPT_FTP_SSL_CCC, and CURLOPT_USE_SSL were not included in the configuration match checks, causing them to match too easily. This could lead to libcurl using the wrong credentials when performing a transfer, potentially allowing unauthorized access to sensitive information. * CVE-2023-27536: An authentication bypass vulnerability exists in libcurl in the connection reuse feature which can reuse previously established connections with incorrect user permissions due to a failure to check for changes in the CURLOPT_GSSAPI_DELEGATION option. This vulnerability affects krb5/kerberos/negotiate/GSSAPI transfers and could potentially result in unauthorized access to sensitive information. The safest option is to not reuse connections if the CURLOPT_GSSAPI_DELEGATION option has been changed. * Fix CVE-2023-27538: An authentication bypass vulnerability exists in libcurl where it reuses a previously established SSH connection despite the fact that an SSH option was modified, which should have prevented reuse. libcurl maintains a pool of previously used connections to reuse them for subsequent transfers if the configurations match. However, two SSH settings were omitted from the configuration check, allowing them to match easily, potentially leading to the reuse of an inappropriate connection. Files: 677d9195c2b3e5c5094a20980b4da7db 2845 web optional curl_7.64.0-4+deb10u6.dsc ae6d2e0428d4f65adce2e25451124d38 62540 web optional curl_7.64.0-4+deb10u6.debian.tar.xz 13d7574641451c1097f77800625b120d 11986 web optional curl_7.64.0-4+deb10u6_amd64.buildinfo -----BEGIN PGP SIGNATURE----- iQKjBAEBCgCNFiEErPPQiO8y7e9qGoNf2a0UuVE7UeQFAmRC1YJfFIAAAAAALgAo aXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5maWZ0aGhvcnNlbWFuLm5ldEFD RjNEMDg4RUYzMkVERUY2QTFBODM1RkQ5QUQxNEI5NTEzQjUxRTQPHGFwb0BkZWJp YW4ub3JnAAoJENmtFLlRO1Hk+24QAJ3J5g5rcLyi6dob3r1aj5JO3BraQbkg1uQ5 CN+v1z2q/opUit7PgpUUDFHOfP7pWP9jCWCsWOmuBvbxOZz8c/HGwPM4WH9KJXi/ VCBvhh+TUFaQDv0bsU4f1iXboAR9PV0CNlgQa1vxWrlsQTCywnwnUC2mc+Dlejbl nCLduzIlI39xMZg0LymADjpiKlOrnzZZM+Me2CJaf/48jqQxBflcq063cwnImno9 Tod3H7xfvfxdBO3MInTYtpvXj6IIqRjz5Yq89CVJI0PwB3kzWIJnZy3Ke88mKiwg JcAVLWenAnDC//ba+FK2K+k+DY5Qt24fJ/ZM4QWCntB8vrXAJPo/SCyMuNCQBCmo aEKkt3KIAMXiUfV47I+ESshYfx55XVR6V9PQe5aIBloolTuokXEXdVJ/UDHVmC37 776t2qgY7PHoaUYZvjOR/OKpDZSmLRIgamjFTENutqRqg8BOIZqrBIxPBt4quvSi ad7yG5zKNkTdkPhq4KTmAap1YOf2w5GOnqmOsBI6XiJaHrNMA0yHrNKySn0lUBY0 cP5muQ3tSwunAlwsWHqfeJxwQY3HvF/mlZU7MESPt+B2w0kVIHjlydJ9PxvaI6Gp LLbVxvEWPpAATE9ynVxr4cqDkj4iQha/H3EvHT0aFj+jPqeCB06dnvZJuF7vps2s A42Qeakq =SivQ -----END PGP SIGNATURE-----