Vulnerability CVE-2009-4492
Published: 2010-01-13   Modified: 2012-02-13

Description:
WEBrick 1.3.1 in Ruby 1.8.6 through patchlevel 383, 1.8.7 through patchlevel 248, 1.8.8dev, 1.9.1 through patchlevel 376, and 1.9.2dev writes data to a log file without sanitizing non-printable characters, which might allow remote attackers to modify a window's title, or possibly execute arbitrary commands or overwrite files, via an HTTP request containing an escape sequence for a terminal emulator.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Nginx, Varnish, Cherokee, thttpd, mini-httpd, WEBrick, Orion, AOLserver, Yaws and Boa log escape sequence injection
ascii
17.01.2010

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Webrick -> Webrick 
Ruby-lang -> RUBY 

 References:
http://securitytracker.com/id?1023429
http://www.redhat.com/support/errata/RHSA-2011-0908.html
http://www.redhat.com/support/errata/RHSA-2011-0909.html
http://www.ruby-lang.org/en/news/2010/01/10/webrick-escape-sequence-injection
http://www.securityfocus.com/archive/1/508830/100/0/threaded
http://www.securityfocus.com/bid/37710
http://www.ush.it/team/ush/hack_httpd_escape/adv.txt
http://www.vupen.com/english/advisories/2010/0089
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