Auth bypass in Samba
CVE-2016-2125
It was found that Samba before versions 4.5.3, 4.4.8, 4.3.13 always requested forwardable tickets when using Kerberos authentication. A service to which Samba authenticated using Kerberos could subsequently use the ticket to impersonate Sa…
Vulnerability class: Broken Authentication
EPSS: 0.092 (94.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Samba
- [Unknown] Samba — versions 4.5.3, 4.3.13, 4.4.8
- Redhat Enterprise_linux_desktop — versions 6.0, 7.0
- Redhat Enterprise_linux_server — versions 6.0, 7.0
- Redhat Enterprise_linux_server_aus — versions 7.4, 7.6
- Redhat Enterprise_linux_server_eus — versions 7.3, 7.4, 7.5
- Redhat Enterprise_linux_server_tus — versions 7.3, 7.6
- Redhat Enterprise_linux_workstation — versions 6.0, 7.0
- Redhat Gluster_storage — versions 3.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory, Mitigation, Issue Tracking)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- secalert@redhat.com (x_refsource_CONFIRM, Patch, Mitigation, Vendor Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-2125?
- CVE-2016-2125 is a medium-severity vulnerability in Samba, classified under Improper Authentication. CVSS score: 6.5/10. Published 2018-10-31.
- How severe is CVE-2016-2125?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2016-2125 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.