CVE-2022-37797

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.

CVSS v3.0 7.5 HIGH

7.5^/10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://redmine.lighttpd.net/issues/3165	Exploit Issue Tracking Third Party Advisory
https://www.debian.org/security/2022/dsa-5243	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/10/msg00002.html	Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202210-12	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:lighttpd:lighttpd:1.4.65:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Information

Published : 2022-09-12 08:15

Updated : 2022-12-02 17:11

NVD link : CVE-2022-37797

Mitre link : CVE-2022-37797

JSON object : View

CWE

CWE-476

NULL Pointer Dereference

Products Affected

debian

debian_linux

lighttpd

lighttpd

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7.5 /10