NULL Pointer Dereference Affecting krb5-libs package, versions <0:1.13.2-10.el7


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
94.38% (100th percentile)

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  • Snyk IDSNYK-RHEL7-KRB5LIBS-5112320
  • published26 Jul 2021
  • disclosed9 Dec 2014

Introduced: 9 Dec 2014

CVE-2014-5355  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade RHEL:7 krb5-libs to version 0:1.13.2-10.el7 or higher.
This issue was patched in RHSA-2015:2154.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5-libs package and not the krb5-libs package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

MIT Kerberos 5 (aka krb5) through 1.13.1 incorrectly expects that a krb5_read_message data field is represented as a string ending with a '\0' character, which allows remote attackers to (1) cause a denial of service (NULL pointer dereference) via a zero-byte version string or (2) cause a denial of service (out-of-bounds read) by omitting the '\0' character, related to appl/user_user/server.c and lib/krb5/krb/recvauth.c.

CVSS Scores

version 3.1