(OpenOffice Issues Fix) ICU Regular Expression Processing Bug May Let Users Execute Arbitrary Code
|
|
SecurityTracker Alert ID: 1019903 |
|
SecurityTracker URL: http://securitytracker.com/id/1019903
|
|
CVE Reference:
CVE-2007-4770, CVE-2007-4771
(Links to External Site)
|
Date: Apr 18 2008
|
Impact:
Denial of service via network, Execution of arbitrary code via network, User access via network
|
Fix Available: Yes Vendor Confirmed: Yes
|
|
Description:
Two vulnerabilities were reported in ICU. A user may be able to cause arbitrary code to be executed on the target system. OpenOffice is affected.
A user can create a specially crafted regular expression that, when processed by an application that uses ICU, will trigger a memory corruption error and potentially execute arbitrary code on the target system. The code will run with the privileges of the target application.
If an application allows a remote user to submit arbitrary regular expressions, then a remote user may be able to exploit this flaw.
A regular expression pattern that contains a back reference to capture group zero (\0), which does not exist, may establish references to random memory addresses [CVE-2007-4770].
The doInterval() function in 'regexcmp.cpp' does not properly limit the size of the backtracking stack, allowing a heap overflow to be triggered [CVE-2007-4771].
Will Drewry reported these vulnerabilities.
|
Impact:
A user can create a regular expression that, when processed by the target application, may execute arbitrary code on the target system.
|
Solution:
OpenOffice.org has issued a fix for OpenOffice, which is affected by this vulnerability.
The OpenOffice advisory is available at:
http://www.openoffice.org/security/cves/CVE-2007-4770.html
|
Cause:
Boundary error, Input validation error
|
Underlying OS:
Linux (Any), UNIX (Any)
|
|
Message History:
This archive entry is a follow-up to the message listed below.
|
Source Message Contents
|
Date: Thu, 17 Apr 2008 10:08:41 -0400
Subject: OpenOffice
|
http://www.openoffice.org/security/cves/CVE-2007-4770.html
CVE-2007-4770
CVE-2007-4771
|
|
