There's a flaw in the zeromq server in versions before 4.3.3 in src/decoder_allocators.hpp. The decoder static allocator could have its sized changed, but the buffer would remain the same as it is a static buffer. A remote, unauthenticated attacker who sends a crafted request to the zeromq server could trigger a buffer overflow WRITE of arbitrary data if CURVE/ZAP authentication is not enabled. The greatest impact of this flaw is to application availability, data integrity, and confidentiality.
References
Link | Resource |
---|---|
https://bugzilla.redhat.com/show_bug.cgi?id=1921983 | Issue Tracking Patch Third Party Advisory |
https://github.com/zeromq/libzmq/security/advisories/GHSA-fc3w-qxf5-7hp6 | Patch Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: redhat
Published: 2021-04-01T13:47:05
Updated: 2021-04-01T13:47:05
Reserved: 2020-12-17T00:00:00
Link: CVE-2021-20235
JSON object: View
NVD Information
Status : Modified
Published: 2021-04-01T14:15:13.217
Modified: 2023-11-07T03:29:01.440
Link: CVE-2021-20235
JSON object: View
Redhat Information
No data.