SecuritySpace - CVE-2021-20235

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CVE ID: CVE-2021-20235

Description: 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.

Test IDs: 1.3.6.1.4.1.25623.1.0.892588

Cross References: Common Vulnerability Exposure (CVE) ID: CVE-2021-20235
https://bugzilla.redhat.com/show_bug.cgi?id=1921983
https://bugzilla.redhat.com/show_bug.cgi?id=1921983
https://github.com/zeromq/libzmq/security/advisories/GHSA-fc3w-qxf5-7hp6
https://github.com/zeromq/libzmq/security/advisories/GHSA-fc3w-qxf5-7hp6

CVE ID:	CVE-2021-20235
Description:	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.
Test IDs:	1.3.6.1.4.1.25623.1.0.892588
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2021-20235 https://bugzilla.redhat.com/show_bug.cgi?id=1921983 https://bugzilla.redhat.com/show_bug.cgi?id=1921983 https://github.com/zeromq/libzmq/security/advisories/GHSA-fc3w-qxf5-7hp6 https://github.com/zeromq/libzmq/security/advisories/GHSA-fc3w-qxf5-7hp6