SB2021111076 - Red Hat Enterprise Linux 8 update for the httpd:2.4 module

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Main Vulnerability Database SB2021111076

SB2021111076 - Red Hat Enterprise Linux 8 update for the httpd:2.4 module

Published: November 10, 2021

Security Bulletin ID SB2021111076
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
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 2 secuirty vulnerabilities.


1) Input validation error (CVE-ID: CVE-2021-30641)

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to incorrect parsing of Apache configuration files. An unexpected section could be matched with 'MergeSlashes OFF' option, leading to a potential security issue.


2) NULL pointer dereference (CVE-ID: CVE-2021-26690)

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

The vulnerability exists due to a NULL pointer dereference error in mod_session. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References