CVE-2023-39975: Double Free
First published: Wed Aug 16 2023(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| MIT Kerberos 5 | >=1.21<1.21.2 |
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Reference Links
- https://github.com/krb5/krb5/commit/88a1701b423c13991a8064feeb26952d3641d840
- https://github.com/krb5/krb5/compare/krb5-1.21.1-final...krb5-1.21.2-final
- https://security.netapp.com/advisory/ntap-20230915-0014/
- https://web.mit.edu/kerberos/www/advisories/
- https://security.netapp.com/advisory/ntap-20240201-0008/
- https://security.netapp.com/advisory/ntap-20240201-0005/
Frequently Asked Questions
What is the vulnerability ID of this vulnerability?
The vulnerability ID is CVE-2023-39975.
What is the severity of CVE-2023-39975?
The severity of CVE-2023-39975 is high, with a CVSS score of 8.8.
What software is affected by CVE-2023-39975?
MIT Kerberos 5 versions 1.21 before 1.21.2 are affected by CVE-2023-39975.
How can an attacker exploit CVE-2023-39975?
An authenticated user can trigger an authorization-data handling failure to exploit CVE-2023-39975.
Is there a fix available for CVE-2023-39975?
Yes, a fix is available in MIT Kerberos 5 version 1.21.2.
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- agent/author
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- canonical/mit kerberos 5
- version/mit kerberos 5/1.21