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Integer Overflow or Wraparound Affecting krb5 package, versions <1.19.4-r0

0.0
high

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.49% (76th percentile)
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NVD
8.8 high
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SUSE
6.4 medium
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Red Hat
8.8 high

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  • Snyk ID SNYK-ALPINE315-KRB5-3136433
  • published 20 Nov 2022
  • disclosed 25 Dec 2022
Report a new vulnerability Found a mistake?

Introduced: 20 Nov 2022

CVE-2022-42898 Open this link in a new tab
CWE-190 Open this link in a new tab

How to fix?

Upgrade Alpine:3.15 krb5 to version 1.19.4-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5 package and not the krb5 package as distributed by Alpine. See How to fix? for Alpine:3.15 relevant fixed versions and status.

PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has "a similar bug."