JVN#62868899
7-ZIP32.DLL buffer overflow vulnerability
Overview
7-ZIP32.DLL, a library for compression and decompression supporting 7z, zip, and some other format files, contains a buffer overflow vulnerability.
Products Affected
7-ZIP32.DLL Version 4.42.00.03 and earlier
Description
7-ZIP32.DLL is an open source library for compression and decompression supporting 7z, zip, and some other format files. 7-ZIP32.DLL is based on "Integrated Archiver API Specification", and called from the compression/decompression software. 7-ZIP32.DLL contains a buffer overflow vulnerability. If a user decompresses and opens a specially crafted file, a remote attacker could possibly execute arbitrary code with the privilege of the user.
Impact
Arbitrary code could be executed with the privilege of a user who opened a specially crafted file.
Solution
Upgrade
Apply the latest updates provided by the developer.
For more information, refer to the developer's website.
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
Analyzed on 2007.09.05
| Measures | Conditions | Severity |
|---|---|---|
| Access Required | Routed - can be attacked over the Internet using packets |
|
| Authentication | None - anonymous or no authentication (IP addresses do not count) |
|
| 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 |
|
| Exploit Complexity | Low-Medium - some expertise and/or luck required (most buffer overflows, guessing correctly in small space, expertise in Windows function calls) |
|
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 |
CVE-2007-4725 |
| JVN iPedia |
JVNDB-2007-000645 |