Published:2008/04/28  Last Updated:2008/07/17

JVN#74468481
Lhaplus buffer overflow vulnerability
Critical

Overview

Lhaplus, file compression/decompression software supporting multiple compression file formats, contains a buffer overflow vulnerability.

Products Affected

  • Lhaplus Version 1.56 and eariler

Description

Lhaplus, file compression/decompression software supporting multiple compression file formats, contains a buffer overflow vulnerability. If a user decompresses a specially crafted file, an attacker could execute arbitrary code with the privilege of the user.

This vulnerability is different from JVN#82610488 and JVN#70734805.

Impact

An attacker could execute arbitrary code with the privilege of the user who decompressed the file.

Solution

Update the Software
Update to the latest version according to the information provided by the vendor.
For more information, refer to the vendor's website.

Vendor Status

Vendor Status Last Update Vendor Notes
Schezo Vulnerable 2008/04/28

References

  1. IPA
    Security Alert for Lhaplus Vulnerability

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2008.04.28 Critical

Measures Conditions Severity
Access Required Routed - can be attacked over the Internet using packets
  • High
Authentication None - anonymous or no authentication (IP addresses do not count)
  • High
User Interaction Required Simple - the user must be convinced to take a standard action that does not feel harmful to most users, such as click on a link or view a file
  • Medium
Exploit Complexity Low - little to no expertise and/or luck required to exploit (cross-site scripting)
  • High

Description of each analysis measures

Credit

Yuji Ukai of Fourteenforty Research Institute, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the vendors under Information Security Early Warning Partnership.

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE
JVN iPedia JVNDB-2008-000022

Update History

2008/05/21
JVN English site opened and the first English advisory of this issue was published.
2008/07/17
Information under the section "References" was added.