Bug 1839856 (CVE-2019-20800) - CVE-2019-20800 cherokee: out-of-bounds write in cherokee_handler_cgi_add_env_pair function in handler_cgi.c
Summary: CVE-2019-20800 cherokee: out-of-bounds write in cherokee_handler_cgi_add_env_...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2019-20800
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1839857 1839858
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-05-25 19:03 UTC by Guilherme de Almeida Suckevicz
Modified: 2020-05-26 14:24 UTC (History)
1 user (show)

Fixed In Version:
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Last Closed: 2020-05-25 21:15:28 UTC
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Description Guilherme de Almeida Suckevicz 2020-05-25 19:03:00 UTC 
In Cherokee through 1.2.104, remote attackers can trigger an out-of-bounds write in cherokee_handler_cgi_add_env_pair in handler_cgi.c by sending many request headers, as demonstrated by a GET request with many "Host: 127.0.0.1" headers.

References:
https://github.com/cherokee/webserver/issues/1224
https://logicaltrust.net/blog/2019/11/cherokee.html
Comment 1 Guilherme de Almeida Suckevicz 2020-05-25 19:03:21 UTC 
Created cherokee tracking bugs for this issue:

Affects: epel-6 [bug 1839858]
Affects: fedora-all [bug 1839857]
Comment 2 Product Security DevOps Team 2020-05-25 21:15:28 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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