by Kastro
Paper/Archive/CVE-2021-20236

CVE-2021-20236

redhat — A flaw was found in the ZeroMQ server in versions before 4.3.3.

EPSS 2%CVSS 9.8
critical.is priorityof 100
45
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 79.3.793 × 2015.9No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

A flaw was found in the ZeroMQ server in versions before 4.3.3. This flaw allows a malicious client to cause a stack buffer overflow on the server by sending crafted topic subscription requests and then unsubscribing. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

Affected

ProductAffectedFixed inSource
zeromqzeromq 4.3.3–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

refbugzilla.redhat.com/show_bug.cgi?id=1921976refgithub.com/zeromq/libzmq/security/advisories/GHSA-qq65-x72m-9wr8