SB2023022865 - Ubuntu update for lighttpd

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Main Vulnerability Database SB2023022865

SB2023022865 - Ubuntu update for lighttpd

Published: February 28, 2023

Security Bulletin ID SB2023022865
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) Out-of-bounds read (CVE-ID: CVE-2022-22707)

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

The vulnerability exists due to a boundary condition in the mod_extforward_Forwarded function of the mod_extforward plugin. A remote attacker can send a specially crafted request to the web server, trigger an out-of-bounds read error and perform a denial of service attack.

Successful exploitation of the vulnerability requires a non-default configuration for handling of the Forwarded header.


2) Memory leak (CVE-ID: CVE-2022-41556)

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak within the mod_fastcgi and mod_scgi modules when handling a large number of incorrect HTTP requests. A remote attacker can send multiple incorrect HTTP requests to the web server and perform denial of service attack.


Remediation

Install update from vendor's website.

References