CVE-2012-10043: Stack Overflow

Description

A stack-based buffer overflow vulnerability exists in ActFax Server version 4.32, specifically in the "Import Users from File" functionality of the client interface. The application fails to properly validate the length of tab-delimited fields in .exp files, leading to unsafe usage of strcpy() during CSV parsing. An attacker can exploit this vulnerability by crafting a malicious .exp file and importing it using the default character set "ECMA-94 / Latin 1 (ISO 8859)". Successful exploitation may result in arbitrary code execution, leading to full system compromise. User interaction is required to trigger the vulnerability.

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Weakness Type (CWE)

CWE-121 CWE-121

References

Other References

https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/fileformat/actfax_import_users_bof.rb https://web.archive.org/web/20130712072809/http://www.pwnag3.com/2012/08/actfax-local-privilege-escalation.html https://www.actfax.com/ https://www.exploit-db.com/exploits/20915 https://www.vulncheck.com/advisories/actfax-client-importer-buffer-overflow https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/fileformat/actfax_import_users_bof.rb https://www.exploit-db.com/exploits/20915

Frequently Asked Questions

What is CVE-2012-10043? +

A stack-based buffer overflow vulnerability exists in ActFax Server version 4.32, specifically in the "Import Users from File" functionality of the client interface. The application fails to properly validate the length of tab-delimited fields in .exp files, leading to unsafe usage of strcpy() during CSV parsing. An attacker can exploit this vulnerability by crafting a malicious .exp file and importing it using the default character set "ECMA-94 / Latin 1 (ISO 8859)". Successful exploitation may result in arbitrary code execution, leading to full system compromise. User interaction is required to trigger the vulnerability.

How do I check if I'm vulnerable to CVE-2012-10043? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2012-10043