Integer Overflow or Wraparound Affecting krb5-libs package, versions <0:1.18.2-22.0.1.el8_7



    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

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

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  • Snyk ID SNYK-ORACLE8-KRB5LIBS-3150111
  • published 29 Nov 2022
  • disclosed 25 Dec 2022

How to fix?

Upgrade Oracle:8 krb5-libs to version 0:1.18.2-22.0.1.el8_7 or higher.
This issue was patched in ELSA-2022-8638.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5-libs package and not the krb5-libs package as distributed by Oracle. See How to fix? for Oracle:8 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."