SB2013121602 - Gentoo update for MIT Kerberos 5

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2013121602

SB2013121602 - Gentoo update for MIT Kerberos 5

Published: December 16, 2013 Updated: May 27, 2022

Security Bulletin ID SB2013121602
Severity
High
Patch available
YES
Number of vulnerabilities 7
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 29% Medium 29% Low 43%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 7 secuirty vulnerabilities.


1) Input validation error (CVE-ID: CVE-2002-2443)

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

schpw.c in the kpasswd service in kadmind in MIT Kerberos 5 (aka krb5) before 1.11.3 does not properly validate UDP packets before sending responses, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged packet that triggers a communication loop, as demonstrated by krb_pingpong.nasl, a related issue to CVE-1999-0103.


2) Input validation error (CVE-ID: CVE-2012-1014)

The vulnerability allows a remote non-authenticated attacker to #BASIC_IMPACT#.

The process_as_req function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.10.x before 1.10.3 does not initialize a certain structure member, which allows remote attackers to cause a denial of service (uninitialized pointer dereference and daemon crash) or possibly execute arbitrary code via a malformed AS-REQ request.


3) Input validation error (CVE-ID: CVE-2012-1015)

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

The kdc_handle_protected_negotiation function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8.x, 1.9.x before 1.9.5, and 1.10.x before 1.10.3 attempts to calculate a checksum before verifying that the key type is appropriate for a checksum, which allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized pointer free, heap memory corruption, and daemon crash) via a crafted AS-REQ request.


4) NULL pointer dereference (CVE-ID: CVE-2013-1416)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via a crafted TGS-REQ request.


5) Input validation error (CVE-ID: CVE-2013-1417)

The vulnerability allows a remote #AU# to perform service disruption.

do_tgs_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.11 before 1.11.4, when a single-component realm name is used, allows remote authenticated users to cause a denial of service (daemon crash) via a TGS-REQ request that triggers an attempted cross-realm referral for a host-based service principal.


6) Input validation error (CVE-ID: CVE-2013-1418)

The vulnerability allows remote attackers to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (NULL pointer dereference and daemon crash) via a crafted request.


7) Input validation error (CVE-ID: CVE-2013-6800)

The vulnerability allows remote authenticated users to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (NULL pointer dereference and daemon crash) via a crafted request, a different vulnerability than CVE-2013-1418.


Remediation

Install update from vendor's website.

References