SB2022011210 - Denial of service in lighttpd
Published: January 12, 2022 Updated: January 20, 2022
Security Bulletin ID
SB2022011210
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
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.
Remediation
Install update from vendor's website.