CVE-2016-2125
MEDIUMCVSS 6.5/10EPSS 9.27%
Last modified
CVE-2016-2125 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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 Samba to other services or domain users.. EPSS estimates a 9.27% chance of exploitation in the next 30 days.
Description
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 Samba to other services or domain users.
Metrics
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Samba | Samba | >= 3.0.25, < 4.3.13 |
| Samba | Samba | >= 4.4.0, < 4.4.8 |
| Samba | Samba | >= 4.5.0, < 4.5.3 |
| Redhat | Gluster Storage | 3.0 |
| Redhat | Enterprise Linux Desktop | 6.0 |
| Redhat | Enterprise Linux Desktop | 7.0 |
| Redhat | Enterprise Linux Server | 6.0 |
| Redhat | Enterprise Linux Server | 7.0 |
| Redhat | Enterprise Linux Server Aus | 7.4 |
| Redhat | Enterprise Linux Server Aus | 7.6 |
| Redhat | Enterprise Linux Server Eus | 7.3 |
| Redhat | Enterprise Linux Server Eus | 7.4 |
| Redhat | Enterprise Linux Server Eus | 7.5 |
| Redhat | Enterprise Linux Server Eus | 7.6 |
| Redhat | Enterprise Linux Server Tus | 7.3 |
| Redhat | Enterprise Linux Server Tus | 7.6 |
| Redhat | Enterprise Linux Workstation | 6.0 |
| Redhat | Enterprise Linux Workstation | 7.0 |
References
- http://rhn.redhat.com/errata/RHSA-2017-0494.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0495.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0662.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0744.htmlThird Party Advisory
- http://www.securityfocus.com/bid/94988Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037494Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:1265Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2125Issue Tracking, Mitigation, Third Party Advisory
- https://www.samba.org/samba/security/CVE-2016-2125.htmlMitigation, Patch, Vendor Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0494.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0495.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0662.htmlThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2017-0744.htmlThird Party Advisory
- http://www.securityfocus.com/bid/94988Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1037494Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:1265Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2125Issue Tracking, Mitigation, Third Party Advisory
- https://www.samba.org/samba/security/CVE-2016-2125.htmlMitigation, Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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 Samba to other services or domain users.
How severe is CVE-2016-2125?
CVE-2016-2125 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 9.27% probability of exploitation in the next 30 days.
How do I fix CVE-2016-2125?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2016
- CVE-2016-2119libcli/smb/smbXcli_base.c in Samba 4.x before 4.2.14, 4.3.x …7.5
- CVE-2016-2120An issue has been found in PowerDNS Authoritative Server ver…7.5
- CVE-2016-2121A permissions flaw was found in redis, which sets weak permi…4
- CVE-2016-2122Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
- CVE-2016-2123A flaw was found in samba versions 4.0.0 to 4.5.2. The Samba…8.8
- CVE-2016-2124A flaw was found in the way samba implemented SMB1 authentic…5.9
- CVE-2016-2126Samba version 4.0.0 up to 4.5.2 is vulnerable to privilege e…6.5
- CVE-2016-2127Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
- CVE-2016-2128Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
- CVE-2016-2129Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
- CVE-2016-2130Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
- CVE-2016-2131Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
Are you affected by CVE-2016-2125?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST