CVE-2022-37797
HIGH
7.5
CVSS Score
Published: September 12, 2022 at 12:00 AM UTC
Updated: June 17, 2026 at 04:55 AM UTC
2 products affected across 2 vendorsDebian LinuxLighttpd
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Severity
HIGH7.5
Exploit prediction
EPSS 3%
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (4)
Mailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2022/10/msg00002.htmlExploitIssue TrackingThird Party Advisory
Source: [email protected]
https://redmine.lighttpd.net/issues/3165Vendor AdvisoryThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202210-12Vendor AdvisoryMailing ListThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2022/dsa-5243CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-476
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