Bug 2126414 (CVE-2022-37797) - CVE-2022-37797 www-servers/lighttpd: DoS via uninitialized function pointer
Summary: CVE-2022-37797 www-servers/lighttpd: DoS via uninitialized function pointer
Alias: CVE-2022-37797
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 2126415 2126416
TreeView+ depends on / blocked
Reported: 2022-09-13 11:57 UTC by ybuenos
Modified: 2022-11-26 10:28 UTC (History)
3 users (show)

Fixed In Version:
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Clone Of:
Last Closed: 2022-11-26 10:28:25 UTC

Attachments (Terms of Use)

Description ybuenos 2022-09-13 11:57:14 UTC
In lighttpd 1.4.63,65,66 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.


Comment 1 ybuenos 2022-09-13 11:57:31 UTC
Created lighttpd tracking bugs for this issue:

Affects: epel-all [bug 2126415]
Affects: fedora-all [bug 2126416]

Comment 2 Product Security DevOps Team 2022-11-26 10:28:23 UTC
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.

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