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Mandriva Linux Security Advisory : krb5 (MDVSA-2013:042)

high Nessus Plugin ID 66056

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Synopsis

The remote Mandriva Linux host is missing one or more security updates.

Description

Multiple vulnerabilities has been discovered and corrected in krb5 :

Fix a kadmind denial of service issue (NULL pointer dereference), which could only be triggered by an administrator with the create privilege (CVE-2012-1013).

The MIT krb5 KDC (Key Distribution Center) daemon can free an uninitialized pointer while processing an unusual AS-REQ, corrupting the process heap and possibly causing the daemon to abnormally terminate. An attacker could use this vulnerability to execute malicious code, but exploiting frees of uninitialized pointers to execute code is believed to be difficult. It is possible that a legitimate client that is misconfigured in an unusual way could trigger this vulnerability (CVE-2012-1015).

It was reported that the KDC plugin for PKINIT could dereference a NULL pointer when a malformed packet caused processing to terminate early, which led to a crash of the KDC process. An attacker would require a valid PKINIT certificate or have observed a successful PKINIT authentication to execute a successful attack. In addition, an unauthenticated attacker could execute the attack of anonymouse PKINIT was enabled (CVE-2013-1415).

The updated packages have been patched to correct these issues.

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 66056

File Name: mandriva_MDVSA-2013-042.nasl

Version: 1.12

Type: local

Published: 4/20/2013

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

Vulnerability Information

CPE: p-cpe:/a:mandriva:linux:krb5, p-cpe:/a:mandriva:linux:krb5-pkinit-openssl, p-cpe:/a:mandriva:linux:krb5-server, p-cpe:/a:mandriva:linux:krb5-server-ldap, p-cpe:/a:mandriva:linux:krb5-workstation, p-cpe:/a:mandriva:linux:lib64krb53, p-cpe:/a:mandriva:linux:lib64krb53-devel, cpe:/o:mandriva:business_server:1

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/Mandrake/release, Host/Mandrake/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 4/5/2013

Reference Information

CVE: CVE-2012-1013, CVE-2012-1015, CVE-2013-1415

BID: 53784, 54750, 58144

MDVSA: 2013:042

MGASA: 2013-0087