NCSA Webserver 1.5 phf privileges management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability, which was classified as very critical, has been found in NCSA Webserver 1.5 (Web Server). This issue affects an unknown function of the component phf Handler. The manipulation with an unknown input leads to a privilege escalation vulnerability. Using CWE to declare the problem leads to CWE-269. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

phf cgi program allows remote command execution through shell metacharacters.

The weakness was disclosed 03/20/1996 by r00t with IBM ERS Team (Website). It is possible to read the advisory at The vendor was not involved in the public release. The identification of this vulnerability is CVE-1999-0067. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/05/2019). Due to its background and reception, this vulnerability has a historic impact.

After even before and not, there has been an exploit disclosed. It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 79 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 10176 (Multiple Vendor phf CGI Arbitrary Command Execution), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context remote.

Upgrading eliminates this vulnerability. Attack attempts may be identified with Snort ID 886. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 1334.

The vulnerability is also documented in the databases at X-Force (148), Vulnerability Center (SBV-203) and Tenable (10176).


  • Apache httpd 1.0.3





CPE 2.3infoedit

CPE 2.2infoedit


VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.4

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Privilege escalation
CWE: CWE-269
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 10176
Nessus Name: Multiple Vendor phf CGI Arbitrary Command Execution
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfoedit

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍


Snort ID: 886
Snort Message: SERVER-WEBAPP phf access
Snort Class: 🔍
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

SourceFire IPS: 🔍
ISS Proventia IPS: 🔍


01/01/1996 🔍
03/20/1996 +79 days 🔍
03/20/1996 +0 days 🔍
03/20/1996 +0 days 🔍
03/20/1996 +0 days 🔍
06/22/1999 +1189 days 🔍
09/12/2002 +1178 days 🔍
10/23/2002 +40 days 🔍
06/17/2014 +4255 days 🔍
05/05/2019 +1783 days 🔍


Researcher: r00t
Organization: IBM ERS Team
Status: Not defined

CVE: CVE-1999-0067 (🔍)
X-Force: 148
Vulnerability Center: 203 - VGI phf cmd exec, High
SecurityFocus: 629 - phf Remote Command Execution Vulnerability
OSVDB: 136 - Multiple Vendor phf CGI Arbitrary Command Execution

scip Labs:


Created: 06/17/2014 04:56 PM
Updated: 05/05/2019 03:16 PM
Changes: (3) advisory_person_nickname exploit_date source_osvdb_create
Complete: 🔍


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