Description

cbor2 provides encoding and decoding for the Concise Binary Object Representation (CBOR) (RFC 8949) serialization format. Starting in version 5.5.1 and prior to version 5.6.2, an attacker can crash a service using cbor2 to parse a CBOR binary by sending a long enough object. Version 5.6.2 contains a patch for this issue.

Classification

CVE ID: CVE-2024-26134

CVSS Base Severity: HIGH

CVSS Base Score: 7.5

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products

Vendor: agronholm

Product: cbor2

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.16% (probability of being exploited)

EPSS Percentile: 54.34% (scored less or equal to compared to others)

EPSS Date: 2025-03-14 (when was this score calculated)

References

https://github.com/agronholm/cbor2/security/advisories/GHSA-375g-39jq-vq7m
https://github.com/agronholm/cbor2/pull/204
https://github.com/agronholm/cbor2/commit/387755eacf0be35591a478d3c67fe10618a6d542
https://github.com/agronholm/cbor2/commit/4de6991ba29bf2290d7b9d83525eda7d021873df
https://github.com/agronholm/cbor2/releases/tag/5.6.2
https://lists.fedoraproject.org/archives/list/[email protected]/message/GX524ZG2XJWFV37UQKQ4LWIH4UICSGEQ/
https://lists.fedoraproject.org/archives/list/[email protected]/message/BT42VXZMMMCSSHMA65KKPOZCXJEYHNR5/
https://lists.fedoraproject.org/archives/list/[email protected]/message/PWC3VU6YV6EXKCSX5GTKWLBZIDIJNQJY/

Timeline