SB2011021002 - Multiple vulnerabilities in MIT Kerberos 5

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Main Vulnerability Database SB2011021002

SB2011021002 - Multiple vulnerabilities in MIT Kerberos 5

Published: February 10, 2011 Updated: May 27, 2022

Security Bulletin ID SB2011021002
Severity
High
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Medium 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 secuirty vulnerabilities.


1) Input validation error (CVE-ID: CVE-2011-0285)

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

The process_chpw_request function in schpw.c in the password-changing functionality in kadmind in MIT Kerberos 5 (aka krb5) 1.7 through 1.9 frees an invalid pointer, which allows remote attackers to execute arbitrary code or cause a denial of service (daemon crash) via a crafted request that triggers an error condition.


2) Resource management error (CVE-ID: CVE-2011-0284)

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

Double free vulnerability in the prepare_error_as function in do_as_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 through 1.9, when the PKINIT feature is enabled, allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via an e_data field containing typed data.


3) Input validation error (CVE-ID: CVE-2011-0283)

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 malformed request packet that does not trigger a response packet.


4) Input validation error (CVE-ID: CVE-2010-4022)

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

The do_standalone function in the MIT krb5 KDC database propagation daemon (kpropd) in Kerberos 1.7, 1.8, and 1.9, when running in standalone mode, does not properly handle when a worker child process "exits abnormally," which allows remote attackers to cause a denial of service (listening process termination, no new connections, and lack of updates in slave KVC) via unspecified vectors.


Remediation

Install update from vendor's website.

References