CVE-2011-4151 Denial of service in n/a
Remote attackers can cause a denial of service in MIT Kerberos KDC when using the Berkeley DB backend, requiring an upgrade to mitigate.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-4151?
CVE-2011-4151 is a high-severity denial of service vulnerability in Mit Kerberos 5, published on 20 Oct 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The krb5_db2_lockout_audit function in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.8 through 1.8.4, when the db2 (aka Berkeley DB) back end is used, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via unspecified vectors, a different vulnerability than CVE-2011-1528.
Weakness: CWE-20
Which versions are affected by CVE-2011-4151?
It affects 1 product.
Products include Mit Kerberos 5.
How do I fix CVE-2011-4151?
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-2011-4151 being exploited?
There is no known exploitation of CVE-2011-4151 in the wild and no public exploit code.
Other vulnerabilities in Mit Kerberos 5
Sources
Also known as DEBIAN-CVE-2011-4151, GHSA-3wcv-7r47-m45v.