SB2022062433 - SUSE update for 389-ds 

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Main Vulnerability Database SB2022062433

SB2022062433 - SUSE update for 389-ds

Published: June 24, 2022 Updated: August 18, 2022

Security Bulletin ID SB2022062433
Severity
Medium
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 secuirty vulnerabilities.


1) Improper Authentication (CVE-ID: CVE-2021-3652)

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in the way the asterisk character is processed by the LDAP server when importing password hashes from /etc/shadow for disabled accounts. As a result of the flaw, if an LDAP admin imports such an account from a NIS or /etc/shadow database into Directory Server, any password will be valid for that account.


2) Use-after-free (CVE-ID: CVE-2021-4091)

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

The vulnerability exists due to a use-after-free error when processing virtual attributes context in persistent searches. A remote user can send specially crafted search requests to the directory server, trigger a use-after-free error and crash the server.



3) Buffer overflow (CVE-ID: CVE-2022-0918)

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

The vulnerability exists due to a boundary error when handling network packets. A remote attacker can create a single TCP packet to the LDAP port, trigger a segmentation fault and crash the slapd daemon.


4) Insufficient Session Expiration (CVE-ID: CVE-2022-0996)

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insufficient session expiration issue that allows expired passwords to access the database to cause improper authentication. A remote non-authenticated attacker can obtain or guess session token and gain unauthorized access to session that belongs to another user.


5) Incorrect authorization (CVE-ID: CVE-2022-1949)

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

The vulnerability exists due to incorrect authorization in the 389-ds-base package where some LDAP queries can cause performance issues. A remote attacker can send a non-optimal search that causes serious performance issues within the directory server.


Remediation

Install update from vendor's website.

References