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CVE-2016-3120
The validate_as_request function in kdc_util.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.13.6 and 1.4.x…
Medium6.5EPSS 4.6%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
The validate_as_request function in kdc_util.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.13.6 and 1.4.x before 1.14.3, when restrict_anonymous_to_tgt is enabled, uses an incorrect client data structure, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via an S4U2Self request.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Medium6.5 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 4.6% · top 8.3% of all CVEs (4 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
Affected products
n/a
- affected n/a
References (10)
- https://github.com/krb5/krb5/commit/93b4a6306a0026cf1cc31ac4bd8a49ba5d034ba7 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 92132 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- [debian-lts-announce] 20180131 [SECURITY] [DLA 1265-1] krb5 security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- openSUSE-SU-2016:2268 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- http://krbdev.mit.edu/rt/Ticket/Display.html?id=8458 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1036442 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- http://web.mit.edu/kerberos/krb5-1.13/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2016:2591 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- http://web.mit.edu/kerberos/krb5-1.14/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- FEDORA-2016-0674a3c372 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2016-3120)Record last updated .