SB2020103107 - OpenSUSE Linux update for apache2 

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Main Vulnerability Database SB2020103107

SB2020103107 - OpenSUSE Linux update for apache2

Published: October 31, 2020

Security Bulletin ID SB2020103107
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) Resource management error (CVE-ID: CVE-2020-11993)

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

The vulnerability exists due to improper management of internal resources within the application while processing HTTP/2 requests with enabled trace/debug for HTTP/2 connections. A remote attacker can send specially crafted HTTP/2 requests to Apache HTTP Server and force it to make logging statements on wrong connection for certain traffic edge patterns. This results in concurrent use of memory pools for separate connections and triggers denial of service condition.


2) Input validation error (CVE-ID: CVE-2020-9490)

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

The vulnerability exists due to insufficient validation of user-supplied input when processing Cache-Digest header in HTTP/2 request. A remote attacker can pass specially crafted HTTP/2 request to the Apache HTTP Server, trigger the server to send the HTTP/2 PUSH and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References