CVE-1999-1257 Auth bypass in n/a
Remote attackers can bypass password authentication on Xyplex terminal servers by sending specific control characters.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-1999-1257?
CVE-1999-1257 is a high-severity authentication bypass vulnerability in n/a, published on 12 Sep 2001. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Xyplex terminal server 6.0.1S1, and possibly other versions, allows remote attackers to bypass the password prompt by entering (1) a CTRL-Z character, or (2) a ? (question mark).
Which versions are affected by CVE-1999-1257?
It affects 1 product.
Products include Xyplex Maxserver Xyplex Terminal Server.
How do I fix CVE-1999-1257?
No fix has been published for CVE-1999-1257 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-1999-1257 being exploited?
There is no known exploitation of CVE-1999-1257 in the wild and no public exploit code.
Sources
Also known as GHSA-x5qw-j8m6-38mj.