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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8.8 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
mitreCNA
---
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CVEADP
---
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Base Score
CVSS 3.x
EPSS Score
Percentile: 78%
VendorProductVersion
mitkerberos_5
1.21 ≤
𝑥
< 1.21.2
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
krb5
bullseye (security)
1.18.3-6+deb11u5
fixed
bullseye
1.18.3-6+deb11u5
fixed
bookworm
1.20.1-2+deb12u2
fixed
bookworm (security)
1.20.1-2+deb12u2
fixed
sid
1.21.3-3
fixed
trixie
1.21.3-3
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
krb5
lunar
not-affected
jammy
not-affected
focal
not-affected
bionic
not-affected
xenial
not-affected
trusty
not-affected
Common Weakness Enumeration
References
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://security.netapp.com/advisory/ntap-20240201-0005/
https://security.netapp.com/advisory/ntap-20240201-0008/
https://web.mit.edu/kerberos/www/advisories/
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://security.netapp.com/advisory/ntap-20240201-0005/
https://security.netapp.com/advisory/ntap-20240201-0008/
https://web.mit.edu/kerberos/www/advisories/