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Ubuntu 24.10, 24.04 LTS: USN-7314-1 critical: krb5 DoS attacks

ubuntu
Calendar Grey March 3, 2025
Dist Ubuntu Esm H88
Alert Bulletin USN-7314-1 highlights various Kerberos vulnerabilities impacting different Ubuntu releases, detailing essential patches delivered.
Several security issues were fixed in Kerberos.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 24.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: Several security issues were fixed in Kerberos. Software Description: - krb5: MIT Kerberos Network Authentication Protocol Details: It was discovered that Kerberos incorrectly handled certain memory operations. A remote attacker could possibly use this issue to cause Kerberos to consume memory,leading to a denial of service. (CVE-2024-26458, CVE-2024-26461) It was discovered that Kerberos incorrectly handled certain memory operations. A remote attacker could possibly use this issue to cause Kerberos to consume memory,leading to a denial of service. This issue only affected Ubuntu 24.04 LTS. (CVE-2024-26462) It was discovered that the Kerberos kadmind daemon incorrectly handled log files when incremental propagation was enabled. An authenticated attacker could use this issue to cause kadmind to cr...

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Topics%20covered

Topics Covered

security advisory DoS Ubuntu krb5 authenticated attack memory operations

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 24.10 krb5-admin-server 1.21.3-3ubuntu0.2 krb5-kdc 1.21.3-3ubuntu0.2 libgssapi-krb5-2 1.21.3-3ubuntu0.2 libgssrpc4t64 1.21.3-3ubuntu0.2 libkdb5-10t64 1.21.3-3ubuntu0.2 Ubuntu 24.04 LTS krb5-admin-server 1.20.1-6ubuntu2.5 krb5-kdc 1.20.1-6ubuntu2.5 libgssapi-krb5-2 1.20.1-6ubuntu2.5 libgssrpc4t64 1.20.1-6ubuntu2.5 libkdb5-10t64 1.20.1-6ubuntu2.5 Ubuntu 22.04 LTS krb5-admin-server 1.19.2-2ubuntu0.6 krb5-kdc 1.19.2-2ubuntu0.6 libgssapi-krb5-2 1.19.2-2ubuntu0.6 libgssrpc4 1.19.2-2ubuntu0.6 libkdb5-10 1.19.2-2ubuntu0.6 Ubuntu 20.04 LTS krb5-admin-server 1.17-6ubuntu4.9 krb5-kdc 1.17-6ubuntu4.9 libgssapi-krb5-2 1.17-6ubuntu4.9 libgssrpc4 1.17-6ubuntu4.9 libkdb5-9 1.17-6ubuntu4.9 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-7314-1

CVE-2024-26458, CVE-2024-26461, CVE-2024-26462, CVE-2025-24528

Severity
critical
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Ubuntu Security Notice USN-7314-1

Topics%20covered

Topics Covered

security advisory DoS Ubuntu krb5 authenticated attack memory operations

Package Information

https://launchpad.net/ubuntu/+source/krb5/1.21.3-3ubuntu0.2 https://launchpad.net/ubuntu/+source/krb5/1.20.1-6ubuntu2.5 https://launchpad.net/ubuntu/+source/krb5/1.19.2-2ubuntu0.6 https://launchpad.net/ubuntu/+source/krb5/1.17-6ubuntu4.9

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