CVE-2021-20235 (GCVE-0-2021-20235)
Vulnerability from cvelistv5
Published
2021-04-01 13:47
Modified
2024-08-03 17:37
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-120 - ->CWE-787
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.
References
▼ | URL | Tags | |
---|---|---|---|
secalert@redhat.com | https://bugzilla.redhat.com/show_bug.cgi?id=1921983 | Issue Tracking, Patch, Third Party Advisory | |
secalert@redhat.com | https://github.com/zeromq/libzmq/security/advisories/GHSA-fc3w-qxf5-7hp6 | Patch, Third Party Advisory | |
af854a3a-2127-422b-91ae-364da2661108 | https://bugzilla.redhat.com/show_bug.cgi?id=1921983 | Issue Tracking, Patch, Third Party Advisory | |
af854a3a-2127-422b-91ae-364da2661108 | https://github.com/zeromq/libzmq/security/advisories/GHSA-fc3w-qxf5-7hp6 | Patch, Third Party Advisory |
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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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