CVE-2024-26462

Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/kdc/ndr.c.

Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/kdc/ndr.c.

Kerberos 5 (aka krb5) 1.21.2 contains a memory leak vulnerability in /krb5/src/kdc/ndr.c.

Kerberos is a network authentication system, which can improve the security of your network by eliminating the insecure practice of sending passwords over the network in unencrypted form. It allows clients and servers to authenticate to each other with the help of a trusted third party, the Kerberos key distribution center (KDC).

Security Fix(es):

• krb5: Memory leak at /krb5/src/lib/rpc/pmap_rmt.c (CVE-2024-26458)
• krb5: Memory leak at /krb5/src/lib/gssapi/krb5/k5sealv3.c (CVE-2024-26461)
• krb5: Memory leak at /krb5/src/kdc/ndr.c (CVE-2024-26462)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

• CVE-2024-26462: Fix memory leak vulnerability in src/kdc/ndr.c

These are all security issues fixed in the krb5-1.21.2-3.1 package on the GA media of openSUSE Tumbleweed.

This update for krb5 fixes the following issues:

• CVE-2024-26458: Fixed memory leak at /krb5/src/lib/rpc/pmap_rmt.c (bsc#1220770).
• CVE-2024-26461: Fixed memory leak at /krb5/src/lib/gssapi/krb5/k5sealv3.c (bsc#1220771).
• CVE-2024-26462: Fixed memory leak at /krb5/src/kdc/ndr.c (bsc#1220772).

This update for krb5 fixes the following issues:

• CVE-2024-37370: Confidential GSS krb5 wrap tokens with invalid plaintext Extra Count fields were erroneously accepted during unwrap (bsc#1227186)
• CVE-2024-37371: Fixed invalid memory read when processing message tokens with invalid length fields (bsc#1227187)
• CVE-2024-26458: Fixed memory leak at /krb5/src/lib/rpc/pmap_rmt.c (bsc#1220770)
• CVE-2024-26461: Fixed memory leak at /krb5/src/lib/gssapi/krb5/k5sealv3.c (bsc#1220771)
• CVE-2024-26462: Fixed memory leak at /krb5/src/kdc/ndr.c (bsc#1220772)

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 crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2025-24528)