Privilege escalation in Samba
CVE-2015-8467
The samldb_check_user_account_control_acl function in dsdb/samdb/ldb_modules/samldb.c in Samba 4.x before 4.1.22, 4.2.x before 4.2.7, and 4.3.x before 4.3.3 does not properly check for administrative privileges during creation of machine accounts, which allows remote authenticated users to bypass intended access restrictions by leveraging the existence of a domain with both a Samba DC and a Windows DC, a similar issue to CVE-2015-2535.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.031 (87.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.031 · newest: 0.031 · change: 0.000
Affected products
- Samba
- Canonical Ubuntu Linux — versions 12.04, 14.04, 15.04
- Debian Linux — versions 7.0, 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/79735 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00042.html (vendor-advisory, Mailing List, Third Party Advisory)
- www.ubuntu.com/usn/USN-2855-2 (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2015-12/msg00019.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2015-12/msg00020.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2015-12/msg00032.html (vendor-advisory, Mailing List, Third Party Advisory)
- www.samba.org/samba/security/CVE-2015-8467.html (Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- www.securitytracker.com/id/1034493 (VDB Entry, Third Party Advisory, vdb-entry)
- www.debian.org/security/2016/dsa-3433 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2015-8467?
- CVE-2015-8467 is a high-severity vulnerability in Samba, classified under Improper Privilege Management. CVSS score: 7.5/10. Published 2015-12-29.
- How severe is CVE-2015-8467?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2015-8467 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.