CVE-2012-10043

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.

PUBLISHED Reserved 2025-08-07 | Published 2025-08-08 | Updated 2026-04-07 | Assigner VulnCheck

Problem types

CWE-121 Stack-based Buffer Overflow

Product status

Credits

Craig Freyman finder

References

www.exploit-db.com/exploits/20915 exploit

raw.githubusercontent.com/...rmat/actfax_import_users_bof.rb exploit

raw.githubusercontent.com/...rmat/actfax_import_users_bof.rb exploit

www.exploit-db.com/exploits/20915 exploit

web.archive.org/...08/actfax-local-privilege-escalation.html technical-description exploit

www.actfax.com/ product

www.vulncheck.com/.../actfax-client-importer-buffer-overflow third-party-advisory

cve.org (CVE-2012-10043)

nvd.nist.gov (CVE-2012-10043)

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