REDHAT-BUG-2294677
First published: Fri Jun 28 2024(Updated: )
In MIT Kerberos 5 (aka krb5) before 1.21.3, an attacker can modify the plaintext Extra Count field of a confidential GSS krb5 wrap token, causing the unwrapped token to appear truncated to the application. Reference and upstream patch: <a href="https://github.com/krb5/krb5/commit/55fbf435edbe2e92dd8101669b1ce7144bc96fef">https://github.com/krb5/krb5/commit/55fbf435edbe2e92dd8101669b1ce7144bc96fef</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Kerberos | <1.21.3 |
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Reference Links
- https://github.com/krb5/krb5/commit/55fbf435edbe2e92dd8101669b1ce7144bc96fef
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2294678
- https://access.redhat.com/errata/RHSA-2024:4734
- https://access.redhat.com/errata/RHSA-2024:4743
- https://access.redhat.com/errata/RHSA-2024:5076
- https://access.redhat.com/errata/RHSA-2024:5312
- https://access.redhat.com/errata/RHSA-2024:5316
- https://access.redhat.com/errata/RHSA-2024:5625
- https://access.redhat.com/errata/RHSA-2024:5643
- https://access.redhat.com/errata/RHSA-2024:5884
- https://access.redhat.com/errata/RHSA-2024:6166
- https://access.redhat.com/errata/RHSA-2024:7213
- https://access.redhat.com/errata/RHSA-2024:7374
- https://bugzilla.redhat.com/show_bug.cgi?id=2294677
Frequently Asked Questions
What is the severity of REDHAT-BUG-2294677?
The severity of REDHAT-BUG-2294677 is considered critical due to its potential impact on the confidentiality and integrity of GSS krb5 wrap tokens.
How do I fix REDHAT-BUG-2294677?
To fix REDHAT-BUG-2294677, update to MIT Kerberos 5 version 1.21.3 or later.
What versions are affected by REDHAT-BUG-2294677?
REDHAT-BUG-2294677 affects MIT Kerberos 5 versions below 1.21.3.
What type of attack does REDHAT-BUG-2294677 facilitate?
REDHAT-BUG-2294677 allows an attacker to manipulate the plaintext Extra Count field, leading to token truncation.
Is there an upstream patch for REDHAT-BUG-2294677?
Yes, there is an upstream patch available to address the vulnerability in REDHAT-BUG-2294677.
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