Bug 1203358 – VUL-0: CVE-2022-37797: lighttpd: null pointer dereference in mod_wstunnel

Bug 1203358 - (CVE-2022-37797) VUL-0: CVE-2022-37797: lighttpd: null pointer dereference in mod_wstunnel

(CVE-2022-37797)
Summary:	VUL-0: CVE-2022-37797: lighttpd: null pointer dereference in mod_wstunnel

Status:	RESOLVED FIXED

Classification:	Novell Products
Product:	SUSE Security Incidents
Classification:	Novell Products
Component:	Incidents
Version:	unspecified
Hardware:	Other Other

Priority:	P3 - Medium Severity: Normal
Target Milestone:	---
Assigned To:	Security Team bot
QA Contact:	Security Team bot

URL:	https://smash.suse.de/issue/342130/
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Reported:	2022-09-13 07:37 UTC by Thomas Leroy
Modified:	2022-09-29 13:31 UTC (History)
CC List:	2 users (show)

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Found By:	Security Response Team
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Description Thomas Leroy 2022-09-13 07:37:56 UTC

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.

References:
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-37797
https://www.cve.org/CVERecord?id=CVE-2022-37797
https://redmine.lighttpd.net/issues/3165

Comment 1 Thomas Leroy 2022-09-13 07:40:32 UTC

mod_wstunnel was added in 1.4.46, thus SUSE codestream is not affected.

openSUSE affected:
_ openSUSE:Backports:SLE-15-SP4
- openSUSE:Backports:SLE-15-SP3:Update
- openSUSE:Factory

Comment 2 Andreas Stieger 2022-09-13 20:51:40 UTC

submitted

Comment 3 OBSbugzilla Bot 2022-09-13 21:25:03 UTC

This is an autogenerated message for OBS integration:
This bug (1203358) was mentioned in
https://build.opensuse.org/request/show/1003391 Factory / lighttpd
https://build.opensuse.org/request/show/1003392 Backports:SLE-15-SP3+Backports:SLE-15-SP4 / lighttpd

Comment 4 OBSbugzilla Bot 2022-09-29 09:25:10 UTC

This is an autogenerated message for OBS integration:
This bug (1203358) was mentioned in
https://build.opensuse.org/request/show/1006863 Backports:SLE-15-SP3+Backports:SLE-15-SP4 / lighttpd

Comment 5 Swamp Workflow Management 2022-09-29 13:23:01 UTC

openSUSE-SU-2022:10132-1: An update that fixes one vulnerability is now available.

Category: security (moderate)
Bug References: 1203358
CVE References: CVE-2022-37797
JIRA References: 
Sources used:
openSUSE Backports SLE-15-SP4 (src):    lighttpd-1.4.66-bp154.2.3.1
openSUSE Backports SLE-15-SP3 (src):    lighttpd-1.4.66-bp153.2.9.1

Comment 6 Andreas Stieger 2022-09-29 13:31:21 UTC

done