#VU59537 Out-of-bounds read in lighttpd - CVE-2022-22707
Published: January 12, 2022 / Updated: January 20, 2022
Vulnerability identifier: #VU59537
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2022-22707
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
lighttpd
lighttpd
Software vendor:
lighttpd
lighttpd
Description
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.