Vulnerability · Published Sep 12, 2022 · Assigned by mitre
CVE-2022-37797
High 7.5
In plain English
A high-severity security flaw in the lighttpd package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.6% (higher than 85% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)2.6%top 14.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
In lighttpd 1.4.65, mod_wstunnel does not initialize a handler function pointer if an invalid HTTP request (websocket handshake) is received. It leads to null pointer dereference which crashes the server. It could be used by an external attacker to cause denial of service condition.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | lighttpd | 1.4.66-1 | DEBIAN-CVE-2022-37797 |
| Debian:13 | lighttpd | 1.4.66-1 | DEBIAN-CVE-2022-37797 |
| Debian:14 | lighttpd | 1.4.66-1 | DEBIAN-CVE-2022-37797 |
| Ubuntu:22.04:LTS | lighttpd | no fix listed | UBUNTU-CVE-2022-37797 |
Affected products (as reported)
References
- https://redmine.lighttpd.net/issues/3165
- DSA-5243 vendor-advisory
- [debian-lts-announce] 20221003 [SECURITY] [DLA 3133-1] lighttpd security update mailing-list
- GLSA-202210-12 vendor-advisory