CVE-2024-37371

Severity: critical (CVSS 9.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-06-28 · updated 2026-06-17
Weakness: CWE-125

Description

In MIT Kerberos 5 (aka krb5) before 1.21.3, an attacker can cause invalid memory reads during GSS message token handling by sending message tokens with invalid length fields.

Affected products

Debian Linux: 11.0, 12.0
MIT Kerberos 5: before 1.21.3 — fixed in 1.21.3

How to fix

Upgrade to a fixed version: MIT Kerberos 5 1.21.3. Check the vendor advisory for mitigations.

References

https://github.com/krb5/krb5/commit/55fbf435edbe2e92dd8101669b1ce7144bc96fef
https://web.mit.edu/kerberos/www/advisories/
https://github.com/krb5/krb5/commit/55fbf435edbe2e92dd8101669b1ce7144bc96fef
https://security.netapp.com/advisory/ntap-20241108-0009/
https://security.netapp.com/advisory/ntap-20250124-0010/
https://web.mit.edu/kerberos/www/advisories/
https://cert-portal.siemens.com/productcert/html/ssa-082556.html

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