Quick answers
- Is CVE-1999-0192 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-1999-0192 being exploited in the wild.
- How severe is CVE-1999-0192?
- Critical severity, with a CVSS score of 10, published 18 October 1997.
- Which products and versions are affected?
- unknown telnetd.
- Is there a fix for CVE-1999-0192?
- 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-1999-0192 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-1999-0192?
- Check whether anything you run is named in the advisory. 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 vulnerability is a classic buffer overflow located within the telnet daemon (telnetd). It is triggered during the processing of terminal capability information via the tgetent() function. By providing an oversized or maliciously crafted TERMCAP environmental variable during the connection handshake, a remote, unauthenticated attacker can overflow a stack-based buffer. This allows for the redirection of execution flow to arbitrary code, resulting in full system compromise with root privileges. This issue historically affected various Unix-like operating systems implementing standard telnet daemons.
Affected products
- unknown telnetd
Timeline
- 1997-10-18: disclosed: Initial publication date in NVD.