Double Free in Mit Kerberos 5
CVE-2023-39975
kdc/do_tgs_req.c in MIT Kerberos 5 (aka krb5) 1.21 before 1.21.2 has a double free that is reachable if an authenticated user can trigger an authorization-data handling failure. Incorrect data is copied from one ticket to another.
Vulnerability class: Double Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.015 (73.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- web.mit.edu/kerberos/www/advisories/ (Vendor Advisory)
- github.com/krb5/krb5/compare/krb5-1.21.1-final...krb5-1.21.2-final (Patch)
- github.com/krb5/krb5/commit/88a1701b423c13991a8064feeb26952d3641d840 (Patch)
- security.netapp.com/advisory/ntap-20230915-0014/
- security.netapp.com/advisory/ntap-20240201-0008/
- security.netapp.com/advisory/ntap-20240201-0005/
Frequently asked questions
- What is CVE-2023-39975?
- CVE-2023-39975 is a high-severity vulnerability in Mit Kerberos 5, classified under Double Free. CVSS score: 8.8/10. Published 2023-08-16.
- How severe is CVE-2023-39975?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2023-39975 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.