|
avast! Antivirus ACE File Handling Two Vulnerabilities
|
|
Secunia Advisory:
|
SA15776
|
|
|
Release Date:
|
2005-07-21
|
|
Last Update:
|
2005-07-27
|
|
Popularity:
|
15,361 views
|
|
|
Critical:
|
Highly critical
|
|
Impact:
|
Manipulation of data
System access
|
|
Where:
|
From remote
|
|
Solution Status:
|
Vendor Patch
|
|
| Software: | avast! Home/Professional 4.x
|
|
|
Subscribe:
|
Instant alerts on relevant vulnerabilities 
|
|
| CVE reference: | CVE-2005-2384
CVE-2005-2385
|
|
Description:
Secunia Research has discovered two vulnerabilities in avast!, which can be exploited by malicious people to compromise a vulnerable system.
1) An input validation error during extraction of ACE archives for scanning can be exploited to write files to arbitrary directories. This can be exploited when scanning a malicious archive containing a file that has the "/../" directory traversal sequence or an absolute path in its filename.
2) A boundary error in the scanning of ACE archives can be exploited to cause a stack-based buffer overflow when scanning a specially crafted ACE archive containing a file with a filename of more than 290 bytes.
Successful exploitation allows execution of arbitrary code and writing of files to arbitrary directories, but requires ACE archive scanning to be enabled.
The vulnerabilities are related to:
SA14359
The vulnerabilities have been confirmed in avast! Home/Professional Edition version 4.6.665 and Server Edition version 4.6.460. The vendor has reported that avast! Managed Client is also affected.
Solution:
Home/Professional Edition:
Update to version 4.6.691.
Server Edition:
Update to version 4.6.489.
Managed Client:
Update to version 4.6.394.
Provided and/or discovered by:
Tan Chew Keong, Secunia Research.
Changelog:
2005-07-27: Added CVE reference.
Original Advisory:
Secunia Research:
http://secunia.com/secunia_research/2005-20/advisory/
Other References:
SA14359:
http://secunia.com/advisories/14359/
|
|
|
Track this Secunia Advisory
|
Customers of the Secunia Vulnerability Intelligence solutions will automatically receive updates when new information regarding this advisory is released.
Read more about our Vulnerability Intelligence solutions and what they can do for you and your company.
|
|
|
About this Secunia Advisory
|
Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
|
