Vulnerability · Published Apr 1, 2021 · Assigned by redhat
CVE-2021-20234
Medium 6.5
In plain English
A medium-severity uncontrolled resource consumption in zeromq. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)1.1%top 34.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An uncontrolled resource consumption (memory leak) flaw was found in the ZeroMQ client in versions before 4.3.3 in src/pipe.cpp. This issue causes a client that connects to multiple malicious or compromised servers to crash. The highest threat from this vulnerability is to system availability.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | zeromq3 | 4.3.3-1 | DEBIAN-CVE-2021-20234 |
| Debian:13 | zeromq3 | 4.3.3-1 | DEBIAN-CVE-2021-20234 |
| Debian:14 | zeromq3 | 4.3.3-1 | DEBIAN-CVE-2021-20234 |
Affected products (as reported)
Weakness: CWE-400
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1921972 x_refsource_MISC
- https://github.com/zeromq/libzmq/security/advisories/GHSA-wfr2-29gj-5w87 x_refsource_MISC