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 |
Configurations
History
05 Aug 2022, 17:41
Type | Values Removed | Values Added |
---|---|---|
CWE |
06 Apr 2021, 17:34
Type | Values Removed | Values Added |
---|---|---|
CPE | cpe:2.3:a:zeromq:libzmq:*:*:*:*:*:*:*:* | |
References | (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=1921983 - Issue Tracking, Patch, Third Party Advisory | |
References | (MISC) https://github.com/zeromq/libzmq/security/advisories/GHSA-fc3w-qxf5-7hp6 - Patch, Third Party Advisory | |
CVSS |
v2 : v3 : |
v2 : 6.8
v3 : 8.1 |
01 Apr 2021, 14:19
Type | Values Removed | Values Added |
---|---|---|
New CVE |
Information
Published : 2021-04-01 14:15
Updated : 2023-12-10 13:55
NVD link : CVE-2021-20235
Mitre link : CVE-2021-20235
CVE.ORG link : CVE-2021-20235
JSON object : View
Products Affected
zeromq
- libzmq