Resource exhaustion in lighttpd - CVE-2022-30780
Published: September 29, 2022 / Updated: October 11, 2022
Vulnerability identifier: #VU67732
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-30780
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources within the connection_read_header_more() function in connections.c. A remote attacker can trigger resource exhaustion by sending multiple requests with large HTTP headers and perform a denial of service (DoS) attack.
Affected software
lighttpd
How to mitigate CVE-2022-30780
Install updates from vendor's website.
lighttpd - update to 1.4.59