CVE-2019-12854

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 11.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-08-15 · updated 2026-06-17

Description

Due to incorrect string termination, Squid cachemgr.cgi 4.0 through 4.7 may access unallocated memory. On systems with memory access protections, this can cause the CGI process to terminate unexpectedly, resulting in a denial of service for all clients using it.

Affected products

Canonical Ubuntu Linux: 16.04, 18.04, 19.04, 19.10
Debian Linux: 10.0
Fedoraproject Fedora: 29
openSUSE Leap: 15.0, 15.1
Squid: from 4.0 through 4.7

References

http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
http://www.squid-cache.org/Advisories/SQUID-2019_1.txt
http://www.squid-cache.org/Versions/v4/changesets/squid-4-2981a957716c61ff7e21eee1d7d6eb5a237e466d.patch
https://bugs.squid-cache.org/show_bug.cgi?id=4937
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPXN2CLAGN5QSQBTOV5IGVLDOQSRFNTZ/
https://seclists.org/bugtraq/2019/Aug/42
https://usn.ubuntu.com/4213-1/
https://www.debian.org/security/2019/dsa-4507
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00053.html
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00056.html
http://www.squid-cache.org/Advisories/SQUID-2019_1.txt

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