Integer Overflow or Wraparound Affecting krb5 package, versions *


low

Snyk CVSS

    Attack Complexity Low
    Integrity High
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NVD
7.5 high

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  • Snyk ID SNYK-DEBIAN11-KRB5-524883
  • published 16 Jan 2018
  • disclosed 16 Jan 2018

How to fix?

There is no fixed version for Debian:11 krb5.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5 package and not the krb5 package as distributed by Debian:11. See How to fix? for Debian:11 relevant fixed versions and status.

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.