Vulnerability in Samba
CVE-2016-2118
The MS-SAMR and MS-LSAD protocol implementations in Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 mishandle DCERPC connections, which allows man-in-the-middle attackers to perform protocol-downgrade attacks and impersonate users by modifying the client-server data stream, aka "BADLOCK."
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.369 (98.5th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.369 · newest: 0.369 · change: 0.000
Affected products
- Samba
- Canonical Ubuntu Linux — versions 12.04, 14.04, 15.10
- Debian Linux — versions 7.0, 8.0
Weakness classification (CWE)
Public proof-of-concept exploits
- nickanderson/cfengine-CVE-2016-2118
- ARPSyndicate/cvemon
- ILoveOllyexe/Penetration-Test-Metasploitable2
- KDRSMH/Zerone-week-3
- Live-Hack-CVE/CVE-2016-2118
- cfengine-content/registry
- digitronik/rh-sec-data
- dylan23ndagala/Nessus-Vulnerability-Assessment-Home-Lab
- santsys/aruba-clearpass-api
- trend-anz/Deep-Security-Open-Patch
References
- www.slackware.com/security/viewer.php (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00020.html (vendor-advisory, Mailing List, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-0612.html (vendor-advisory, Third Party Advisory)
- www.ubuntu.com/usn/USN-2950-1 (vendor-advisory, Third Party Advisory)
- h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay (Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00024.html (vendor-advisory, Mailing List, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-0613.html (vendor-advisory, Third Party Advisory)
- badlock.org/ (Technical Description, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-0621.html (vendor-advisory, Third Party Advisory)
- www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html (Third Party Advisory)
Frequently asked questions
- What is CVE-2016-2118?
- CVE-2016-2118 is a high-severity vulnerability in Samba, classified under CWE-254. CVSS score: 7.5/10. Published 2016-04-12.
- How severe is CVE-2016-2118?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2016-2118 known to be exploited?
- 11 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.