Is CVE-2019-13132 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 42%.

What products does CVE-2019-13132 affect?

Tracked products affected include Fedora. Check the version you run to see whether it is affected.

How do I fix CVE-2019-13132?

Apply the vendor fix promptly. Upgrade affected products to a fixed version.

CVE-2019-13132

Q: What is CVE-2019-13132?

CVE-2019-13132 is a critical-severity software vulnerability (Out-of-bounds write) with a CVSS score of 9.8. 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

CRITICAL severity · CVSS 9.8 · Out-of-bounds write

9.8CVSS CRITICAL

Summary

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.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactHigh

Integrity impactHigh

Availability impactHigh

Exploit probability (EPSS)42%

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

Affected products we track (1)

Fedora

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Additional information

NVD record
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00033.html
http://www.openwall.com/lists/oss-security/2019/07/08/6Advisory
http://www.securityfocus.com/bid/109284Advisory
https://fangpenlin.com/posts/2024/04/07/how-i-discovered-a-9-point-8-critical-security-vulnerability-in-zeromq-with-mostly-pure-luck/
https://github.com/zeromq/libzmq/issues/3558Advisory
https://github.com/zeromq/libzmq/releasesAdvisory
https://lists.debian.org/debian-lts-announce/2019/07/msg00007.htmlAdvisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AVCTNUEOFFZUNJOXFCYCF3C6Y6NDILI3/