BID:3634

ValiCert Enterprise Validation Authority Private Key Generation Buffer Overflow Vulnerability

Info

ValiCert Enterprise Validation Authority Private Key Generation Buffer Overflow Vulnerability

Bugtraq ID:	3634
Class:	Boundary Condition Error
CVE:	CVE-2001-0949
Remote:	Yes
Local:	No
Published:	Dec 04 2001 12:00AM
Updated:	Jul 11 2009 09:06AM
Credit:	Discovered and posted to Bugtraq by Information Anarchy 2K01 <[email protected]>.
Vulnerable:	Valicert Enterprise Validation Authority 4.2.1 - HP HP-UX 11.0 - IBM AIX 4.3.3 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 - Sun Solaris 2.8 - Sun Solaris 2.7 - Sun Solaris 2.6 Valicert Enterprise Validation Authority 4.2 - HP HP-UX 11.0 - IBM AIX 4.3.3 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 - Sun Solaris 2.8 - Sun Solaris 2.7 - Sun Solaris 2.6 Valicert Enterprise Validation Authority 4.1 - HP HP-UX 11.0 - IBM AIX 4.3.3 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 - Sun Solaris 2.8 - Sun Solaris 2.7 - Sun Solaris 2.6 Valicert Enterprise Validation Authority 4.0 - HP HP-UX 11.0 - IBM AIX 4.3.3 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 - Sun Solaris 2.8 - Sun Solaris 2.7 - Sun Solaris 2.6 Valicert Enterprise Validation Authority 3.9 - HP HP-UX 11.0 - IBM AIX 4.3.3 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 - Sun Solaris 2.8 - Sun Solaris 2.7 - Sun Solaris 2.6 Valicert Enterprise Validation Authority 3.8 - HP HP-UX 11.0 - IBM AIX 4.3.3 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 - Sun Solaris 2.8 - Sun Solaris 2.7 - Sun Solaris 2.6 Valicert Enterprise Validation Authority 3.7 - HP HP-UX 11.0 - IBM AIX 4.3.3 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 - Sun Solaris 2.8 - Sun Solaris 2.7 - Sun Solaris 2.6 Valicert Enterprise Validation Authority 3.6 - HP HP-UX 11.0 - IBM AIX 4.3.3 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 - Sun Solaris 2.8 - Sun Solaris 2.7 - Sun Solaris 2.6 Valicert Enterprise Validation Authority 3.5 - HP HP-UX 11.0 - IBM AIX 4.3.3 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 - Sun Solaris 2.8 - Sun Solaris 2.7 - Sun Solaris 2.6 Valicert Enterprise Validation Authority 3.4 - HP HP-UX 11.0 - IBM AIX 4.3.3 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 - Sun Solaris 2.8 - Sun Solaris 2.7 - Sun Solaris 2.6 Valicert Enterprise Validation Authority 3.3 - HP HP-UX 11.0 - IBM AIX 4.3.3 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 - Sun Solaris 2.8 - Sun Solaris 2.7 - Sun Solaris 2.6

Not Vulnerable:	Valicert Enterprise Validation Authority 4.2.2 - HP HP-UX 11.0 - IBM AIX 4.3.3 - Microsoft Windows 2000 Professional SP2 - Microsoft Windows 2000 Professional SP1 - Microsoft Windows 2000 Professional - Microsoft Windows NT 4.0 SP6a - Microsoft Windows NT 4.0 SP6 - Microsoft Windows NT 4.0 SP5 - Microsoft Windows NT 4.0 SP4 - Microsoft Windows NT 4.0 SP3 - Microsoft Windows NT 4.0 SP2 - Microsoft Windows NT 4.0 SP1 - Microsoft Windows NT 4.0 - Sun Solaris 2.8 - Sun Solaris 2.7 - Sun Solaris 2.6

Discussion

ValiCert Enterprise Validation Authority Private Key Generation Buffer Overflow Vulnerability

ValiCert Enterprise Validation Authority includes an Administration Server, which can be accessed through a web interface. CGI functionality is provided by the script forms.exe. This script is available on port 13333 in the default installation.

One of the functions provided by this script is the ability to generate a new private key for SSL communications or for signing OCSP responses. To generate a new key, several variables must be passed to the script. A long string in any of the variables other than country_name, gen_self_signed_cert, command, or keytype will overflow the buffer. This could overwrite the stack, and possibly lead to execution of arbitrary code.

Exploit / POC

ValiCert Enterprise Validation Authority Private Key Generation Buffer Overflow Vulnerability

Currently the SecurityFocus staff are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.