Quick answers
- Is CVE-1999-0067 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-1999-0067 being exploited in the wild.
- How severe is CVE-1999-0067?
- Critical severity, with a CVSS score of 10, published 20 March 1996.
- Which products and versions are affected?
- NCSA/Apache phf CGI program.
- Is there a fix for CVE-1999-0067?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-1999-0067 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-1999-0067?
- Check whether you run Apache HTTP Server or Apache phf CGI program. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The phf CGI program fails to properly sanitize user input before passing it to a shell command, leading to an OS command injection vulnerability (CWE-78). Specifically, the program does not neutralize shell metacharacters (such as the newline character or semicolons) in the input fields. A remote, unauthenticated attacker can exploit this by submitting a crafted HTTP request containing these characters followed by arbitrary shell commands. This allows the attacker to execute commands with the privileges of the web server user (e.g., 'nobody' or 'www-data'), which can be leveraged for further privilege escalation or data exfiltration.
Affected products
- NCSA/Apache phf CGI program
Timeline
- 1996-03-20: disclosed: Initial public disclosure and NVD publication.
- 1996-12-31: advisory: Included in the 1996 CERT advisory summary.