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jackson-dataformat-cbor

Jackson data format module for RfC7049 Concise Binary Object Representation

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general

source: jackson-dataformat-cbor (main)
version: 2.7.8-5.1
maintainer: Debian Java Maintainers (archive) (DMD)
arch: all
std-ver: 4.6.0
VCS: Git (Browse)

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

[pool directory]

o-o-stable: 2.7.8-3
o-o-sec: 2.7.8-3+deb11u1
oldstable: 2.7.8-5
stable: 2.7.8-5.1

versioned links

2.7.8-3: [.dsc, use dget on this link to retrieve source package] [changelog] [copyright] [rules] [control]
2.7.8-3+deb11u1: [.dsc, use dget on this link to retrieve source package] [changelog] [copyright] [rules] [control]
2.7.8-5: [.dsc, use dget on this link to retrieve source package] [changelog] [copyright] [rules] [control]
2.7.8-5.1: [.dsc, use dget on this link to retrieve source package] [changelog] [copyright] [rules] [control]

binaries

libjackson2-dataformat-cbor

package is gone

This package is not in any development repository. This probably means that the package has been removed (or has been renamed). Thus the information here is of little interest ... the package is going to disappear unless someone takes it over and reintroduces it.

action needed

1 security issue in trixie high

There is 1 open security issue in trixie.

1 important issue:

CVE-2026-106554: One CBOR-parsing issue in jackson-dataformats-binary's CBOR module: an unbounded run of CBOR tags drives quadratic-time TagList growth (CPU/GC-exhaustion DoS, PoC-proven). PoC executed against com.fasterxml.jackson.dataformat:jackson-dataformat-cbor:2.18.2; present in current 2.x and 3.x (tools.jackson.dataformat.cbor) HEAD. Distinct from the Avro and Smile/Protobuf advisories for this repo. Quadratic CPU/GC DoS from an unbounded chain of CBOR tags (PoC-proven). File: cbor/src/main/java/.../cbor/CBORParser.java (tag handling -> TagList). CBOR permits a data item to be preceded by any number of semantic tags. The CBOR parser accumulates them in a TagList whose backing array grows by a fixed increment (+8), not by doubling, and re-scans/copies on each growth. An attacker sends a value preceded by a long run of tag bytes; the fixed-increment growth makes accumulating N tags O(N^2) in time (plus GC pressure), with no cap on the number of stacked tags. PoC (executed, JDK 17): feeding a CBOR stream consisting of a long run of tag bytes (e.g. tag 0xC0+) before a trivial value forces quadratic CPU/GC; parse time grows super-linearly with the tag count, pinning a request thread with no configurable limit. Impact. Algorithmic-complexity denial of service (CWE-407): a modest input of stacked tags consumes quadratic CPU/GC, pinning a request thread; concurrent requests exhaust the pool. Fix. Grow TagList by doubling and/or cap the number of stacked tags (StreamReadConstraints-style).

Created: 2026-11-08 Last update: 2026-11-08 02:00

2 security issues in bookworm high

There are 2 open security issues in bookworm.

1 important issue:

CVE-2026-106554: One CBOR-parsing issue in jackson-dataformats-binary's CBOR module: an unbounded run of CBOR tags drives quadratic-time TagList growth (CPU/GC-exhaustion DoS, PoC-proven). PoC executed against com.fasterxml.jackson.dataformat:jackson-dataformat-cbor:2.18.2; present in current 2.x and 3.x (tools.jackson.dataformat.cbor) HEAD. Distinct from the Avro and Smile/Protobuf advisories for this repo. Quadratic CPU/GC DoS from an unbounded chain of CBOR tags (PoC-proven). File: cbor/src/main/java/.../cbor/CBORParser.java (tag handling -> TagList). CBOR permits a data item to be preceded by any number of semantic tags. The CBOR parser accumulates them in a TagList whose backing array grows by a fixed increment (+8), not by doubling, and re-scans/copies on each growth. An attacker sends a value preceded by a long run of tag bytes; the fixed-increment growth makes accumulating N tags O(N^2) in time (plus GC pressure), with no cap on the number of stacked tags. PoC (executed, JDK 17): feeding a CBOR stream consisting of a long run of tag bytes (e.g. tag 0xC0+) before a trivial value forces quadratic CPU/GC; parse time grows super-linearly with the tag count, pinning a request thread with no configurable limit. Impact. Algorithmic-complexity denial of service (CWE-407): a modest input of stacked tags consumes quadratic CPU/GC, pinning a request thread; concurrent requests exhaust the pool. Fix. Grow TagList by doubling and/or cap the number of stacked tags (StreamReadConstraints-style).

1 ignored issue:

CVE-2020-28491: This affects the package com.fasterxml.jackson.dataformat:jackson-dataformat-cbor from 0 and before 2.11.4, from 2.12.0-rc1 and before 2.12.1. Unchecked allocation of byte buffer can cause a java.lang.OutOfMemoryError exception.

Created: 2026-11-08 Last update: 2026-11-08 02:00

news

[2026-11-05] jackson-dataformat-cbor REMOVED from testing (Debian testing watch)
[2026-11-04] Removed 2.7.8-5.1 from unstable (Debian FTP Masters)
[2026-06-08] Accepted jackson-dataformat-cbor 2.7.8-3+deb11u1 (source) into oldoldstable-security (Markus Koschany)
[2025-04-09] jackson-dataformat-cbor 2.7.8-5.1 MIGRATED to testing (Debian testing watch)
[2025-04-04] Accepted jackson-dataformat-cbor 2.7.8-5.1 (source) into unstable (Bastian Germann) (signed by: bage@debian.org)
[2021-11-09] jackson-dataformat-cbor 2.7.8-5 MIGRATED to testing (Debian testing watch)
[2021-11-04] Accepted jackson-dataformat-cbor 2.7.8-5 (source) into unstable (Markus Koschany)
[2021-11-02] Accepted jackson-dataformat-cbor 2.7.8-4 (source) into unstable (Markus Koschany)
[2018-02-01] jackson-dataformat-cbor 2.7.8-3 MIGRATED to testing (Debian testing watch)
[2018-01-26] Accepted jackson-dataformat-cbor 2.7.8-3 (source) into unstable (Markus Koschany)
[2017-10-19] jackson-dataformat-cbor 2.7.8-2 MIGRATED to testing (Debian testing watch)
[2017-10-13] Accepted jackson-dataformat-cbor 2.7.8-2 (source) into unstable (Markus Koschany)
[2016-12-31] jackson-dataformat-cbor 2.7.8-1 MIGRATED to testing (Debian testing watch)
[2016-12-19] Accepted jackson-dataformat-cbor 2.7.8-1 (source all) into unstable (Emmanuel Bourg)
[2016-04-18] jackson-dataformat-cbor 2.7.3-1 MIGRATED to testing (Debian testing watch)
[2016-04-11] Accepted jackson-dataformat-cbor 2.7.3-1 (source all) into unstable (Emmanuel Bourg)
[2014-10-24] jackson-dataformat-cbor 2.4.3-1 MIGRATED to testing (Britney)
[2014-10-13] Accepted jackson-dataformat-cbor 2.4.3-1 (source all) into unstable, unstable (Hilko Bengen)

bugs [bug history graph]

all: 0

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