CVE-2015-3185

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 16.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-07-20 · updated 2026-06-17
Weakness: CWE-264

Description

The ap_some_auth_required function in server/request.c in the Apache HTTP Server 2.4.x before 2.4.14 does not consider that a Require directive may be associated with an authorization setting rather than an authentication setting, which allows remote attackers to bypass intended access restrictions in opportunistic circumstances by leveraging the presence of a module that relies on the 2.2 API behavior.

Affected products

Apache HTTP Server: 2.4.0, 2.4.1, 2.4.2, 2.4.3, 2.4.4, 2.4.6 (+6)
macOS: 10.10.4
Apple Mac Os X Server: 5.0.3
Apple Xcode: 7.0
Canonical Ubuntu Linux: 12.04, 14.04, 15.04

References

http://httpd.apache.org/security/vulnerabilities_24.html
http://lists.apple.com/archives/security-announce/2015/Aug/msg00001.html
http://lists.apple.com/archives/security-announce/2015/Sep/msg00002.html
http://lists.apple.com/archives/security-announce/2015/Sep/msg00004.html
http://lists.opensuse.org/opensuse-updates/2015-10/msg00011.html
http://rhn.redhat.com/errata/RHSA-2015-1666.html
http://rhn.redhat.com/errata/RHSA-2015-1667.html
http://rhn.redhat.com/errata/RHSA-2016-2957.html
http://www.apache.org/dist/httpd/CHANGES_2.4
http://www.debian.org/security/2015/dsa-3325
http://www.securityfocus.com/bid/75965
http://www.securitytracker.com/id/1032967

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