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.
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References
History
No history.
MITRE
Status: PUBLISHED
Assigner: redhat
Published: 2021-04-01T13:47:05
Updated: 2024-08-03T17:37:22.831Z
Reserved: 2020-12-17T00:00:00
Link: CVE-2021-20235
Vulnrichment
No data.
NVD
Status : Modified
Published: 2021-04-01T14:15:13.217
Modified: 2024-11-21T05:46:11.220
Link: CVE-2021-20235
Redhat