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Insecure Library Loading
Highly critical

avast! CAB and SIS File Processing Buffer Overflows

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Release Date:  2007-05-24    Last Update:  2007-07-30    Views:  13,112

Secunia Advisory SA25380

Where:

From remote

Impact:

System access

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Sergio Alvarez has reported two vulnerabilities in avast!, which can be exploited by malicious people to compromise a vulnerable system.

The vulnerabilities are caused due to errors within the parsing of .CAB and .SIS files and can be exploited to cause heap-based buffer overflows via a specially crafted .CAB or .SIS file.

Successful exploitation may allow execution of arbitrary code.

The vulnerabilities reportedly affects versions prior to 4.7.766 for servers, 4.7.700 for the Managed Client product, and 4.7.1029 for Home/Professional editions.


Solution:
Update to the latest versions.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Sergio Alvarez, n.runs AG

Original Advisory:
avast!:
http://www.avast.com/eng/adnm-management-client-revision-history.html
http://www.avast.com/eng/avast-4-server-revision-history.html
http://www.avast.com/eng/avast-4-home_pro-revision-history.html

n.runs AG:
http://www.nruns.com/advisories/%5Bn.runs-SA-2007.008%5D%20-%20Avast!%20Antivirus%20CAB%20parsing%20Arbitrary%20Code%20Execution%20Advisory.txt
http://www.nruns.com/advisories/%5Bn.runs-SA-2007.009%5D%20-%20Avast!%20Antivirus%20SIS%20parsing%20Arbitrary%20Code%20Execution%20Advisory.txt

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: avast! CAB and SIS File Processing Buffer Overflows

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