SB2011102104 - Multiple vulnerabilities in MIT Kerberos 5

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Main Vulnerability Database SB2011102104

SB2011102104 - Multiple vulnerabilities in MIT Kerberos 5

Published: October 21, 2011 Updated: May 27, 2022

Security Bulletin ID SB2011102104
Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) NULL pointer dereference (CVE-ID: CVE-2011-1527)

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 kinit operation with incorrect string case for the realm, related to the is_principal_in_realm, krb5_set_error_message, krb5_ldap_get_principal, and process_as_req functions.


2) Input validation error (CVE-ID: CVE-2011-1528)

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 (assertion failure and daemon exit) via unspecified vectors, related to the locked_check_p function.


3) NULL pointer dereference (CVE-ID: CVE-2011-1529)

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 vectors that trigger certain process_as_req errors.


Remediation

Install update from vendor's website.

References