CVE-2016-4051

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 18.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-04-25 · updated 2026-06-17
Weakness: CWE-119

Description

Buffer overflow in cachemgr.cgi in Squid 2.x, 3.x before 3.5.17, and 4.x before 4.0.9 might allow remote attackers to cause a denial of service or execute arbitrary code by seeding manager reports with crafted data.

Affected products

Canonical Ubuntu Linux: 12.04, 14.04, 15.10, 16.04
Oracle Corporation Oracle Linux: 6, 7
Squid: 2.0, 2.1, 2.2, 2.3, 2.4, 2.5 (+142)

References

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html
http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html
http://www.debian.org/security/2016/dsa-3625
http://www.openwall.com/lists/oss-security/2016/04/20/6
http://www.openwall.com/lists/oss-security/2016/04/20/9
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
http://www.securityfocus.com/bid/86788
http://www.securityfocus.com/bid/91787
http://www.securitytracker.com/id/1035646
http://www.squid-cache.org/Advisories/SQUID-2016_5.txt

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