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Integer Overflow or Wraparound The advisory has been revoked - it doesn't affect any version of package krb5 Open this link in a new tab

    Threat Intelligence

    EPSS 0.1% (41st percentile)
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NVD
7.5 high

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  • Snyk ID SNYK-UBUNTU1910-KRB5-579343
  • published 16 Jan 2018
  • disclosed 16 Jan 2018
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Introduced: 16 Jan 2018

CVE-2018-5709 Open this link in a new tab
CWE-190 Open this link in a new tab

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:19.10.

NVD Description

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

An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. There is a variable "dbentry->n_key_data" in kadmin/dbutil/dump.c that can store 16-bit data but unknowingly the developer has assigned a "u4" variable to it, which is for 32-bit data. An attacker can use this vulnerability to affect other artifacts of the database as we know that a Kerberos database dump file contains trusted data.