Title: DynFX MailServer POP3d Denial of Service Vulnerability
Severity: HIGH
Description:
DynFX MailServer, from DynFX Internet Services, provides POP3 and SMTP services under WinNT/2000.
DynFX's POPd is vulnerable to buffer overflows of the 'm_srtUser' field of the logon function's string-handling code:
| strMutex = _T("POP3_") + m_strUser + _T("_Lock");
| m_pMutex = new CMutex( FALSE, strMutex );
If a remote attacker attempts to connect by supplying an unusually long username, of at least 258 characters' length, the pop3 service will terminate, requiring a restart.
Affected Products:
- DynFX MailServer 2.10.0 build 3595.1
References:
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