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Reachable Assertion The advisory has been revoked - it doesn't affect any version of package krb5 Open this link in a new tab

    Threat Intelligence

    EPSS 0.3% (70th percentile)
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NVD
5.3 medium
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Red Hat
5.3 medium

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  • Snyk ID SNYK-UBUNTU1904-KRB5-534013
  • published 26 Dec 2018
  • disclosed 26 Dec 2018
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Introduced: 26 Dec 2018

CVE-2018-20217 Open this link in a new tab
CWE-617 Open this link in a new tab

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:19.04.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5 package and not the krb5 package as distributed by Ubuntu.

A Reachable Assertion issue was discovered in the KDC in MIT Kerberos 5 (aka krb5) before 1.17. If an attacker can obtain a krbtgt ticket using an older encryption type (single-DES, triple-DES, or RC4), the attacker can crash the KDC by making an S4U2Self request.