CVE-2020-15166 — Uncontrolled Resource Consumption in Libzmq

CWE-400 — Uncontrolled Resource Consumption12 documents6 sources
Severity
7.5HIGHNVD
OSV9.8
EPSS
0.4%
top 38.52%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Zeromq LibzmqDebian Zeromq3Debian Linux+1 more
Timeline
PublishedSep 11
Latest updateJun 15

Description

In ZeroMQ before version 4.3.3, there is a denial-of-service vulnerability. Users with TCP transport public endpoints, even with CURVE/ZAP enabled, are impacted. If a raw TCP socket is opened and connected to an endpoint that is fully configured with CURVE/ZAP, legitimate clients will not be able to exchange any message. Handshakes complete successfully, and messages are delivered to the library, but the server application never receives them. This is patched in version 4.3.3.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages2 packages

▶NVDzeromq/libzmq< 4.3.3
▶debiandebian/zeromq3< zeromq3 4.3.3-1 (bookworm)

Also affects: Debian Linux 9.0, Fedora 32, 33

Patches

Patch: github.com ↗Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

2
OSV
zeromq3 vulnerabilities↗2022-06-15
▶
OSV
CVE-2020-15166: In ZeroMQ before version 4↗2020-09-11
▶

📋Vendor Advisories

3
Ubuntu
ZeroMQ vulnerabilities↗2022-06-15
▶
Red Hat
zeromq: unauthenticated clients causing denial-of-service↗2020-09-07
▶
Debian
CVE-2020-15166: zeromq3 - In ZeroMQ before version 4.3.3, there is a denial-of-service vulnerability. User...↗2020
▶

💬Community

6
Bugzilla
CVE-2020-15166 zeromq: unauthenticated clients causing denial-of-service [openstack-rdo]↗2020-09-14
▶
Bugzilla
CVE-2020-15166 zeromq: unauthenticated clients causing denial-of-service [fedora-all]↗2020-09-08
▶
Bugzilla
CVE-2020-15166 zeromq3: zeromq: unauthenticated clients causing denial-of-service [epel-all]↗2020-09-08
▶
Bugzilla
CVE-2020-15166 zeromq: unauthenticated clients causing denial-of-service [epel-all]↗2020-09-08
▶
Bugzilla
CVE-2020-15166 zeromq: unauthenticated clients causing denial-of-service↗2020-09-03
▶