CVE-2011-0284 Use after free in n/a

What is CVE-2011-0284?

CVE-2011-0284 is a high-severity use after free vulnerability in Mit Kerberos 5, published on 20 Mar 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Double free vulnerability in the prepare_error_as function in do_as_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 through 1.9, when the PKINIT feature is enabled, allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via an e_data field containing typed data.

Weakness: CWE-399

Which versions are affected by CVE-2011-0284?

It affects 1 product.

Products include Mit Kerberos 5.

How do I fix CVE-2011-0284?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2011-0284 being exploited?

There is no known exploitation of CVE-2011-0284 in the wild and no public exploit code.

Other vulnerabilities in Mit Kerberos 5

• CVE-2011-0285 Use after free in n/a Critical 10.0
• CVE-2008-0947 Memory corruption in n/a Critical 10.0
• CVE-2007-5902 Integer overflow in n/a Critical 10.0
• CVE-2007-4743 Memory corruption in n/a Critical 10.0
• CVE-2007-3999 Memory corruption in n/a Critical 10.0

All Mit Kerberos 5 vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2011-0284, GHSA-w63f-q474-3fj3, RHSA-2011:0356.