CVE-2021-20234 describes an uncontrolled resource consumption (memory leak) vulnerability in the ZeroMQ client, specifically in versions prior to 4.3.3. This flaw, located in src/pipe.cpp, can lead to a denial of service by causing the client to crash if it connects to multiple malicious or compromised servers. Rated with a CVSS score of 6.5 (Medium), the vulnerability has a network attack vector and low attack complexity, requiring user interaction (UI:R) but no privileges. The primary impact is high availability (A:H), with no impact on confidentiality or integrity. Currently, there is no evidence of active exploitation, nor are there any public exploit codes available on platforms like Metasploit or ExploitDB. Community discussion and media coverage for this CVE are also minimal, indicating low public attention.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 4.3.3CPE matchmatch criteria | cpe:2.3:a:zeromq:libzmq:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.