CVE-2015-3455

low
Published 2015-05-18 · Modified 2026-05-06
CVSS v3
CVSS v2
2.6
VIR risk
2.6

Description

Squid 3.2.x before 3.2.14, 3.3.x before 3.3.14, 3.4.x before 3.4.13, and 3.5.x before 3.5.4, when configured with client-first SSL-bump, do not properly validate the domain or hostname fields of X.509 certificates, which allows man-in-the-middle attackers to spoof SSL servers via a valid certificate.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2015-3455

vendor Authored 2026-05-27

Vendor advisory: cve@mitre.org — http://www.squid-cache.org/Advisories/SQUID-2015_1.txt

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2015-3455.html

OS impact

OSVersionStatusFixed in
suse slesaffected
fedora fedora22affected
debian debianbookwormfixed4.1-1
debian debianbullseyefixed4.1-1
debian debianforkyfixed4.1-1
debian debiansidfixed4.1-1
debian debiantrixiefixed4.1-1

Application impact

VendorProductVersionsFixed
squid-cachesquid3.2.0.1
squid-cachesquid3.2.0.2
squid-cachesquid3.2.0.3
squid-cachesquid3.2.0.4
squid-cachesquid3.2.0.5
squid-cachesquid3.2.0.6
squid-cachesquid3.2.0.7
squid-cachesquid3.2.0.8
squid-cachesquid3.2.0.9
squid-cachesquid3.2.0.10
squid-cachesquid3.2.0.11
squid-cachesquid3.2.0.12
squid-cachesquid3.2.0.13
squid-cachesquid3.2.0.14
squid-cachesquid3.2.0.15
squid-cachesquid3.2.0.16
squid-cachesquid3.2.0.17
squid-cachesquid3.2.0.18
squid-cachesquid3.2.0.19
squid-cachesquid3.2.1
squid-cachesquid3.2.2
squid-cachesquid3.2.3
squid-cachesquid3.2.4
squid-cachesquid3.2.5
squid-cachesquid3.2.6
squid-cachesquid3.2.7
squid-cachesquid3.2.8
squid-cachesquid3.2.9
squid-cachesquid3.2.10
squid-cachesquid3.2.11
squid-cachesquid3.2.12
squid-cachesquid3.2.13
squid-cachesquid3.3.0
squid-cachesquid3.3.0.1
squid-cachesquid3.3.0.2
squid-cachesquid3.3.0.3
squid-cachesquid3.3.1
squid-cachesquid3.3.2
squid-cachesquid3.3.3
squid-cachesquid3.3.4
squid-cachesquid3.3.5
squid-cachesquid3.3.6
squid-cachesquid3.3.7
squid-cachesquid3.3.8
squid-cachesquid3.3.9
squid-cachesquid3.3.10
squid-cachesquid3.3.11
squid-cachesquid3.3.12
squid-cachesquid3.3.13
squid-cachesquid3.4.0.1
squid-cachesquid3.4.0.2
squid-cachesquid3.4.0.3
squid-cachesquid3.4.1
squid-cachesquid3.4.2
squid-cachesquid3.4.3
squid-cachesquid3.4.4
squid-cachesquid3.4.5
squid-cachesquid3.4.6
squid-cachesquid3.4.7
squid-cachesquid3.4.8
squid-cachesquid3.4.9
squid-cachesquid3.4.10
squid-cachesquid3.4.11
squid-cachesquid3.4.12
squid-cachesquid3.5.0.1
squid-cachesquid3.5.0.2
squid-cachesquid3.5.0.3
squid-cachesquid3.5.0.4
squid-cachesquid3.5.1
squid-cachesquid3.5.2

References

CWEs

CWE-20

Verify integrity in audit chain (admin only). AS-IS.