Vulnerability Report

CVE-2009-4492

RCE

Title: Ruby-Lang Webrick RCE

RCE

Proof Of Concept

PoC Available for CVE-2009-4492

CWE Category NVD-CWE-noinfo

Published Date Jan 13, 2010

Modified Date Apr 09, 2025

Exploit Status Available

Score 7.5 CVSS v2.0

Exploit Probability (EPSS)

21.10%

Vulnerability Summary

CVE-2009-4492: 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.

Impacted Vendors

yukihiro_matsumoto 1

ruby-lang 2

Reference Links

http://secunia.com/advisories/37949 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 http://secunia.com/advisories/37949 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

CVSS v2.0

Source Entity [email protected]

Severity HIGH

7.5

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:L/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2009-4492 Exploits & PoCs (Proof Of Concept)

Exploit-DB https://www.exploit-db.com/exploits/33489

View Code

April 09, 2025 MODIFIED

Vulnerability data or affected products updated.

January 13, 2010 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector N/A

Complexity N/A

Privileges N/A

Interaction NONE

CVSS Vector String


                                    AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected Stack

No specific products linked.