Published:2007/12/25  Last Updated:2008/05/21

WinAce buffer overflow vulnerability


WinAce provided by e-merge GmbH is vulnerable to buffer overflow.

Products Affected

  • WinAce 2.6.5 and earlier


WinAce provided by e-merge GmbH is software to compress and decompress files in multiple types of compression format.
WinAce is vulnerable to buffer overflow. When WinAce decompresses a specially crafted file, this vulnerability can be exploited to execute arbitrary code with the privilege of the user running the application.


Arbitrary code can be executed with the privilege of the user running the application.


Update the Software
Apply the latest update provided by the vendor.

Vendor Status


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2007.12.25

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 Medium-High - expertise and/or luck required (guessing correctly in medium-sized space, kernel expertise)
  • Medium

Description of each analysis measures


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 Reports
CERT Advisory
CPNI Advisory
JVN iPedia JVNDB-2007-000822

Update History