yarssr GUI.pm module command execution

yarssr-gui-command-execution (38191)

High Risk

Description:

yarssr could allow a remote attacker to execute arbitrary commands, caused by improper validation by the GUI.pm module exec function. If Gnome default URL handling is not enabled, and if the victim could be persuaded to click on a specially crafted URL in a feed, a remote attacker could exploit this vulnerability to execute arbitrary shell commands on the system within the security context of the user.

*CVSS:

Base Score:	6.8
Access Vector:	Network
Access Complexity:	Medium
Authentication:	None
Confidentiality Impact:	Partial
Integrity Impact:	Partial
Availability Impact:	Partial
Temporal Score:	4.8
Exploitability:	Unproven
Remediation Level:	Official-Fix
Report Confidence:	Uncorroborated

Consequences:

Gain Access

Remedy:

Apply the appropriate patch for your system. See References.

References:

• Debian Bug report logs - #448721: Security bug: Code Injection through badly formatted URL.
• Yet Another RSS Reader Web site: Yet Another RSS Reader.
• BID-26273: Yarssr GUI.PM Remote Code Injection Vulnerability
• CVE-2007-5837: GUI.pm in yarssr 0.2.2, when Gnome default URL handling is disabled, allows remote attackers to execute arbitrary commands via shell metacharacters in a link element in a feed.
• DSA-1477: yarssr -- missing input sanitising
• SA27454: yarssr GUI.pm URL Handling Command Injection Vulnerability
• VUPEN/ADV-2007-3679: Yarssr GUI.pm URL Processing Remote Command Injection Vulnerability

Platforms Affected:

• Canonical Ubuntu 7.10
• Debian Debian Linux 4.0
• YARSSR (Yet Another RSS Reader) YARSSR (Yet Another RSS Reader) 0.2.2-1

Reported:

Oct 31, 2007

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email xforce@iss.net

Return to the main page

* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

About IBM Internet Security Systems

IBM Internet Security Systems is a trusted security advisor to thousands of the world's leading businesses and governments, helping to provide pre-emptive protection for networks, desktops and servers. The IBM Proventia? integrated security platform is designed to automatically protect against both known and unknown threats, helping to keep networks up and running and shield customers from online attacks before they impact business assets. IBM Internet Security Systems products and services are based on the proactive security intelligence of its X-Force? research and development team ? an unequivocal world authority in vulnerability and threat research. The IBM Internet Security Systems product line is also complemented by comprehensive Managed Security Services and Professional Security Services. For more information, visit the IBM Internet Security Systems Web site at www.iss.net or call 800-776-2362.