CVE-2019-14844 Denial of service in krb5

What is CVE-2019-14844?

CVE-2019-14844 is a high-severity denial of service vulnerability in Fedoraproject Fedora, published on 26 Sep 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A flaw was found in, Fedora versions of krb5 from 1.16.1 to, including 1.17.x, in the way a Kerberos client could crash the KDC by sending one of the RFC 4556 "enctypes". A remote unauthenticated user could use this flaw to crash the KDC.

Weakness: CWE-628

Which versions are affected by CVE-2019-14844?

It affects 2 products.

Products include Fedoraproject Fedora, Mit Kerberos 5.

How do I fix CVE-2019-14844?

No fix has been published for CVE-2019-14844 yet. Limit exposure of the affected software until one is available.

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-2019-14844 being exploited?

There is no known exploitation of CVE-2019-14844 in the wild and no public exploit code.

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All Fedoraproject Fedora vulnerabilities

Sources

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

Also known as GHSA-5445-rx9p-gmmp.