CBOR2 decoder has potential buffer overflow
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 1.2%
exploitation probability
1.2%top 34% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
agronholm · cbor2References
https://github.com/agronholm/cbor2/commit/387755eacf0be35591a478d3c67fe10618a6d542https://github.com/agronholm/cbor2/commit/4de6991ba29bf2290d7b9d83525eda7d021873dfhttps://github.com/agronholm/cbor2/pull/204https://github.com/agronholm/cbor2/releases/tag/5.6.2https://github.com/agronholm/cbor2/security/advisories/GHSA-375g-39jq-vq7mhttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BT42VXZMMMCSSHMA65KKPOZCXJEYHNR5/https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GX524ZG2XJWFV37UQKQ4LWIH4UICSGEQ/https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PWC3VU6YV6EXKCSX5GTKWLBZIDIJNQJY/