Vulnerability in Apache HTTP Server
CVE-2015-3185
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.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 4.3 (Medium). Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.163 (96.9th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 96.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.188 · newest: 0.163 · change: -0.024
Affected products
- Apache HTTP Server — versions 2.4.0, 2.4.1, 2.4.2
- Apple Mac OS X — versions 10.10.4
- Apple Mac OS X Server — versions 5.0.3
- Apple Xcode — versions 7.0
- Canonical Ubuntu Linux — versions 12.04, 14.04, 15.04
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.opensuse.org/opensuse-updates/2015-10/msg00011.html (vendor-advisory)
- httpd.apache.org/security/vulnerabilities_24.html (Vendor Advisory)
- github.com/apache/httpd/commit/cd2b7a26c776b0754fb98426a67804fd48118708
- rhn.redhat.com/errata/RHSA-2015-1667.html (vendor-advisory)
- support.apple.com/HT205217
- www.apache.org/dist/httpd/CHANGES_2.4
- lists.apple.com/archives/security-announce/2015/Sep/msg00002.html (vendor-advisory)
- access.redhat.com/errata/RHSA-2017:2709 (vendor-advisory)
- rhn.redhat.com/errata/RHSA-2015-1666.html (vendor-advisory)
- www.securitytracker.com/id/1032967 (vdb-entry)
Frequently asked questions
- What is CVE-2015-3185?
- CVE-2015-3185 is a vulnerability in Apache HTTP Server, classified under CWE-264. Published 2015-07-20.
- Is CVE-2015-3185 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.