NULL Pointer Dereference Affecting krb5-server-ldap package, versions <0:1.10.3-10.25.amzn1


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
2.92% (86th percentile)

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  • Snyk IDSNYK-AMZN201803-KRB5SERVERLDAP-1667490
  • published27 Sept 2021
  • disclosed19 Apr 2013

Introduced: 19 Apr 2013

CVE-2013-1416  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 krb5-server-ldap to version 0:1.10.3-10.25.amzn1 or higher.
This issue was patched in ALAS-2013-182.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5-server-ldap package and not the krb5-server-ldap package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

The prep_reprocess_req function in do_tgs_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.5 does not properly perform service-principal realm referral, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted TGS-REQ request.

CVSS Base Scores

version 3.1