Secunia

Secunia Research has discovered multiple vulnerabilities in Verity KeyView SDK, which can be exploited by malicious people to bypass certain security restrictions or compromise a user's system.

1) A boundary error in kvarcve.dll when constructing the full pathname of a compressed file to check for its existence before extracting it from a ZIP archive can be exploited to cause a stack-based buffer overflow.

Successful exploitation allows execution of arbitrary code when a compressed file with a long filename is extracted from within an application using the vulnerable viewer.

2) A boundary error in uudrdr.dll when handling UUE files containing an encoded file with an overly long filename can be exploited to cause a stack-based buffer overflow.

Successful exploitation allows execution of arbitrary code when a malicious UUE file is opened in an application using the vulnerable viewer.

3) Directory traversal errors in kvarcve.dll when generating the preview of a compressed file from ZIP, UUE, and TAR archives can be exploited to delete arbitrary files on an affected system.

Successful exploitation requires that a compressed file with directory traversal sequences in its filename is viewed in an application using the vulnerable viewer.

4) A boundary error in the TAR reader (tarrdr.dll) when extracting files from a TAR archive can be exploited to cause a stack-based buffer overflow via a TAR archive containing a file with a long filename.

Successful exploitation allows execution of arbitrary code, but requires that a compressed file within a malicious TAR archive is extracted with an application using the vulnerable viewer.

5) A boundary error in the HTML speed reader (htmsr.dll) can be exploited to cause a stack-based buffer overflow via a malicious HTML document containing an overly long link beginning with either "http", "ftp", or "//".

Successful exploitation allows execution of arbitrary code, but requires that the link in the HTML document is followed in an application using the vulnerable viewer.

6) A boundary error in the HTML speed reader when checking if a link references a local file can be exploited to cause a stack-based buffer overflow via a malicious HTML document containing a specially crafted, overly long link.

Successful exploitation allows execution of arbitrary code as soon as the the malicious HTML document is viewed in an application using the vulnerable viewer.

The vendor reports that all versions prior to 9.2.0 are affected. Four of the vulnerabilities only affect KeyView Viewer SDK, whereas the remaining two vulnerabilities affect the KeyView Filter, Export, and Viewer SDK.

Solution
Update to version 9.2.0 or later.

Provided and/or discovered by
1-2) Tan Chew Keong, Secunia Research.
3) Tan Chew Keong and Carsten Eiram, Secunia Research.
4-6) Carsten Eiram, Secunia Research.

Changelog
Further details available in Customer Area

Original Advisory
Secunia Research:
http://secunia.com/secunia_research/2005-66/

Deep Links
Links available in Customer Area