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Last updated: 7/25/2014 11:54:10 AM

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Vulnerability Summary for CVE-2013-1415

Original release date: 03/05/2013
Last revised: 10/10/2013
Source: US-CERT/NIST

Overview

The pkinit_check_kdc_pkid function in plugins/preauth/pkinit/pkinit_crypto_openssl.c in the PKINIT implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.4 and 1.11.x before 1.11.1 does not properly handle errors during extraction of fields from an X.509 certificate, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a malformed KRB5_PADATA_PK_AS_REQ AS-REQ request.

Description

Per: http://cwe.mitre.org/data/definitions/476.html 'CWE-476: NULL Pointer Dereference'

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score: 7.1 (HIGH) (AV:N/AC:M/Au:N/C:N/I:N/A:C) (legend)
Impact Subscore: 6.9
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows disruption of service

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External Source: CONFIRM
Name: http://web.mit.edu/kerberos/www/krb5-1.11/
External Source: CONFIRM
Name: http://web.mit.edu/kerberos/www/krb5-1.10/
External Source: CONFIRM
Name: http://krbdev.mit.edu/rt/Ticket/Display.html?id=7577
External Source: SECUNIA
Name: 55040
External Source: MANDRIVA
Name: MDVSA-2013:157
External Source: CONFIRM
Name: http://krbdev.mit.edu/rt/Ticket/Display.html?id=7570
External Source: SUSE
Name: openSUSE-SU-2013:0523
External Source: CONFIRM
Name: https://github.com/krb5/krb5/commit/f249555301940c6df3a2cdda13b56b5674eebc2e
Type: Patch Information; Exploit

Technical Details

Vulnerability Type (View All)