Auth bypass in Apache HTTP Server
CVE-2017-3167
In Apache httpd 2.2.x before 2.2.33 and 2.4.x before 2.4.26, use of the ap_get_basic_auth_pw() by third-party modules outside of the authentication phase may lead to authentication requirements being bypassed.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.202 (97.4th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.202 · newest: 0.202 · change: 0.000
Affected products
- Apache HTTP Server
- Apache Software Foundation HTTP Server — versions 2.4.0 to 2.4.25, 2.2.0 to 2.2.32
- Apple Mac OS X
- NetApp Clustered Data Ontap
- NetApp Oncommand Unified Manager
- NetApp Storagegrid
- Oracle Secure Global Desktop — versions 5.3
- Debian Linux — versions 8.0, 9.0
- Red Hat Enterprise Linux — versions 6.0, 7.0
- Red Hat Enterprise Linux Desktop — versions 6.0, 7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- support.apple.com/HT208221 (Third Party Advisory)
- access.redhat.com/errata/RHSA-2017:2479 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2017:2483 (vendor-advisory, Third Party Advisory)
- security.netapp.com/advisory/ntap-20180601-0002/ (Third Party Advisory)
- www.nomachine.com/SU08O00185 (Third Party Advisory)
- support.hpe.com/hpsc/doc/public/display (Third Party Advisory)
- access.redhat.com/errata/RHSA-2017:3475 (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/99135 (VDB Entry, Third Party Advisory, vdb-entry)
- access.redhat.com/errata/RHSA-2017:3195 (vendor-advisory, Third Party Advisory)
- www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-3167?
- CVE-2017-3167 is a critical-severity vulnerability in Apache HTTP Server, classified under Improper Authentication. CVSS score: 9.8/10. Published 2017-06-20.
- How severe is CVE-2017-3167?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2017-3167 known to be exploited?
- 40 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.