Visual IRC JOIN response buffer overflow

virc-join-bo (35276)

High Risk

Description:

Visual IRC is vulnerable to a buffer overflow, caused by improper bounds checking by the SE handler. By persuading a victim to connect to a malicious IRC server, a remote attacker could send an overly long JOIN response to overflow a buffer and execute arbitrary code on the system.

*CVSS:

Base Score:	8
Access Vector:	Remote
Access Complexity:	High
Authentication:	Not Required
Confidentiality Impact:	Complete
Integrity Impact:	Complete
Availability Impact:	Complete
Temporal Score:	7.2
Exploitability:	Functional
Remediation Level:	Unavailable
Report Confidence:	Uncorroborated

Consequences:

Gain Access

Remedy:

Upgrade to the lastest version (2.0pl1 or later), available from the Visual IRC Web site. See References.

References:

• SourceForge.net: Visual IRC.
• Visual IRC Web site: Version 2.0pl1, Released 9 Jul 2007.
• BID-24798: Visual IRC Join Response Buffer Overflow Vulnerability
• CVE-2007-3612: Stack-based buffer overflow in Visual IRC (ViRC) 2.0 allows remote IRC servers to execute arbitrary code via a long response to a JOIN command.
• SA25977: Visual IRC JOIN Command Response Processing Buffer Overflow
• VUPEN/ADV-2007-2467: Visual IRC JOIN Command Response Handling Remote Buffer Overflow Vulnerability

Platforms Affected:

• Visual IRC Visual IRC 2.0

Reported:

Jul 06, 2007

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For corrections or additions please email xforce@iss.net

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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.

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