NULL Pointer Dereference Affecting krb5-pkinit-openssl package, versions <0:1.10.3-10.el6_4.1


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.72% (81st percentile)

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  • Snyk IDSNYK-RHEL6-KRB5PKINITOPENSSL-1459273
  • published26 Jul 2021
  • disclosed15 Feb 2013

Introduced: 15 Feb 2013

CVE-2012-1016  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade RHEL:6 krb5-pkinit-openssl to version 0:1.10.3-10.el6_4.1 or higher.
This issue was patched in RHSA-2013:0656.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5-pkinit-openssl package and not the krb5-pkinit-openssl package as distributed by RHEL. See How to fix? for RHEL:6 relevant fixed versions and status.

The pkinit_server_return_padata function in plugins/preauth/pkinit/pkinit_srv.c in the PKINIT implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.4 attempts to find an agility KDF identifier in inappropriate circumstances, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted Draft 9 request.

CVSS Scores

version 3.1