Bug 2045091 (CVE-2022-22707) - CVE-2022-22707 lighttpd: mod_extforward_Forwarded function of the mod_extforward plugin has a stack-based buffer overflow
Summary: CVE-2022-22707 lighttpd: mod_extforward_Forwarded function of the mod_extforw...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2022-22707
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2045093 2045092
Blocks:
TreeView+ depends on / blocked
 
Reported: 2022-01-25 15:26 UTC by Marian Rehak
Modified: 2022-01-25 19:28 UTC (History)
4 users (show)

Fixed In Version:
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Last Closed: 2022-01-25 16:00:47 UTC
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Description Marian Rehak 2022-01-25 15:26:30 UTC 
In lighttpd 1.4.46 through 1.4.63, the mod_extforward_Forwarded function of the mod_extforward plugin has a stack-based buffer overflow (4 bytes representing -1), as demonstrated by remote denial of service (daemon crash) in a non-default configuration. The non-default configuration requires handling of the Forwarded header in a somewhat unusual manner. Also, a 32-bit system is much more likely to be affected than a 64-bit system.

Reference:

https://redmine.lighttpd.net/issues/3134
https://www.debian.org/security/2022/dsa-5040
Comment 1 Marian Rehak 2022-01-25 15:26:48 UTC 
Created lighttpd tracking bugs for this issue:

Affects: epel-all [bug 2045093]
Affects: fedora-all [bug 2045092]
Comment 2 Product Security DevOps Team 2022-01-25 16:00:45 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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