CVE-2011-0281 Denial of service in n/a
Remote attackers can cause a denial of service in MIT Kerberos KDC with LDAP backend by sending crafted principal names with backslash escapes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-0281?
CVE-2011-0281 is a medium-severity denial of service vulnerability in Mit Kerberos 5, published on 10 Feb 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The unparse implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.6.x through 1.9, when an LDAP backend is used, allows remote attackers to cause a denial of service (file descriptor exhaustion and daemon hang) via a principal name that triggers use of a backslash escape sequence, as demonstrated by a \n sequence.
Weakness: CWE-310
Which versions are affected by CVE-2011-0281?
It affects 2 products.
Products include Mit Kerberos, Mit Kerberos 5.
How do I fix CVE-2011-0281?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2011-0281 being exploited?
There is no known exploitation of CVE-2011-0281 in the wild and no public exploit code.
Other vulnerabilities in Mit Kerberos 5
Sources
Also known as DEBIAN-CVE-2011-0281, GHSA-pm35-jvrf-37g2.