Explzh LHA processing buffer overflow

explzh-lhaprocessing-bo (59624)

High Risk

Description:

Explzh is vulnerable to a buffer overflow, caused by improper bounds checking when processing the header of particular LHA archives. By tricking a user into opening a specially crafted LHA archive, an attacker could overflow a buffer and execute arbitrary code in the context of the application.

*CVSS:

Base Score:	7.5
Access Vector:	Network
Access Complexity:	Low
Authentication:	None
Confidentiality Impact:	Partial
Integrity Impact:	Partial
Availability Impact:	Partial
Temporal Score:	6.2
Exploitability:	Functional
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Gain Access

Remedy:

Upgrade to the latest version of Explzh (5.63 or later), available from the Pon software Web site. See References.

References:

• JVN#34729123: Explzh buffer overflow vulnerability.
• Pon software Web site: Explzh for Windows download.
• BID-41025: Explzsh LHA File Processing Buffer Overflow Vulnerability
• CVE-2010-2434: Buffer overflow in Arcext.dll 2.16.1 and earlier in pon software Explzh 5.62 and earlier allows remote attackers to execute arbitrary code via an LZH LHA file with a crafted header that is not properly handled during expansion.
• OSVDB ID: 65666: Explzsh Arcext.dll LHA Archive Header Handling Overflow
• SA40324: Explzsh LHA Processing Buffer Overflow Vulnerability

Platforms Affected:

• Pon Software Explzh 5.62

Reported:

Jun 22, 2010

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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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