CVE-2009-0847 Integer overflow in n/a

Medium 4.3 Published Updated

Remote attackers can crash the Kerberos server via crafted ASN.1 data when PK-INIT is enabled, causing denial of service.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2009-0847?

CVE-2009-0847 is a medium-severity vulnerability in n/a, published on 9 Apr 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The asn1buf_imbed function in the ASN.1 decoder in MIT Kerberos 5 (aka krb5) 1.6.3, when PK-INIT is used, allows remote attackers to cause a denial of service (application crash) via a crafted length value that triggers an erroneous malloc call, related to incorrect calculations with pointer arithmetic.

Weakness: CWE-189

Which versions are affected by CVE-2009-0847?

It affects 1 product.

Products include Mit Kerberos.

How do I fix CVE-2009-0847?

Upgrade to a fixed version.

Is CVE-2009-0847 being exploited?

There is no known exploitation of CVE-2009-0847 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2009-0847, GHSA-ph4p-rhxr-85rq.

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