CVE-2021-20235
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| n/a | zeromq | zeromq 4.3.3 | affected |
Weaknesses
- CWE-120: CWE-120->CWE-787
ADP Enrichment
CVE Program Container
Additional References
- https://bugzilla.redhat.com/show_bug.cgi?id=1921983
- https://github.com/zeromq/libzmq/security/advisories/GHSA-fc3w-qxf5-7hp6
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1921983
- https://github.com/zeromq/libzmq/security/advisories/GHSA-fc3w-qxf5-7hp6
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