Buffer overflow in Zeromq Libzmq
CVE-2019-13132
In ZeroMQ libzmq before 4.0.9, 4.1.x before 4.1.7, and 4.2.x before 4.3.2, a remote, unauthenticated client connecting to a libzmq application, running with a socket listening with CURVE encryption/authentication enabled, may cause a stack overflow and overwrite the stack with arbitrary data, due to a buffer overflow in the library. Users running public servers with the above configuration are highly encouraged to upgrade as soon as possible, as there are no known mitigations.
Vulnerability class: Buffer Overflow
EPSS: 0.425 (98.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Zeromq Libzmq
- Canonical Ubuntu_linux — versions 16.04, 18.04, 18.10
- Debian Debian_linux — versions 8.0, 9.0
- Fedoraproject Fedora — versions 29, 30, 31
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (mailing-list, Mailing List, Third Party Advisory, Release Notes)
- cve@mitre.org (mailing-list, Mailing List, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
- cve@mitre.org (mailing-list, Mailing List, Third Party Advisory)
- cve@mitre.org (Third Party Advisory)
- cve@mitre.org (Third Party Advisory, Release Notes)
- cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, Broken Link)
- cve@mitre.org (vendor-advisory, Broken Link)
- cve@mitre.org (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-13132?
- CVE-2019-13132 is a critical-severity vulnerability in Zeromq Libzmq, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2019-07-10.
- How severe is CVE-2019-13132?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2019-13132 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.