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.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected products
- agronholm / cbor2>= 5.5.1, < 5.6.2 – >= 5.5.1, < 5.6.2
References
- VENDOR_ADVISORYhttps://github.com/agronholm/cbor2/security/advisories/GHSA-375g-39jq-vq7m
- PATCHhttps://github.com/agronholm/cbor2/pull/204
- PATCHhttps://github.com/agronholm/cbor2/commit/387755eacf0be35591a478d3c67fe10618a6d542
- PATCHhttps://github.com/agronholm/cbor2/commit/4de6991ba29bf2290d7b9d83525eda7d021873df
- PATCHhttps://github.com/agronholm/cbor2/releases/tag/5.6.2
- MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GX524ZG2XJWFV37UQKQ4LWIH4UICSGEQ/
- MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BT42VXZMMMCSSHMA65KKPOZCXJEYHNR5/
- MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PWC3VU6YV6EXKCSX5GTKWLBZIDIJNQJY/