Quick answers
- Is CVE-1999-0156 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-1999-0156 being exploited in the wild.
- How severe is CVE-1999-0156?
- Medium severity, with a CVSS score of 4.6, published 1 July 1997.
- Which products and versions are affected?
- Washington University wu-ftpd.
- Is there a fix for CVE-1999-0156?
- 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-1999-0156 attacked?
- It is attacked with local access, in a hosted service.
- Am I affected by CVE-1999-0156?
- Check whether you run Washington University Wu-Ftpd. 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
A vulnerability in the wu-ftpd FTP daemon's authentication mechanism allows for an authentication bypass where any username and password combination is accepted. The root cause is an improper validation of credentials during the login process. While the CVSS 2.0 vector suggests a local attack vector, this typically manifests as a remote authentication bypass in the context of an FTP service. An attacker can gain unauthorized access to the file system with the privileges of the FTP service, allowing for unauthorized reading, writing, or deletion of files. This is a legacy vulnerability originally reported in 1997.
Affected products
- Washington University wu-ftpd
Timeline
- 1997-07-01: disclosed: Initial publication date in NVD.