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Integer Overflow or Wraparound Affecting krb5-server-ldap package, versions <0:1.19.1-24.el9_1

Severity

 Recommended
0.0
high
0
10

Based on AlmaLinux security rating

    Threat Intelligence

    EPSS
    0.98% (84th percentile)

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  • Snyk ID SNYK-ALMALINUX9-KRB5SERVERLDAP-5618730
  • published 28 May 2023
  • disclosed 28 Nov 2022
Report a new vulnerability Found a mistake?

Introduced: 28 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 AlmaLinux:9 krb5-server-ldap to version 0:1.19.1-24.el9_1 or higher.
This issue was patched in ALSA-2022:8637.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5-server-ldap package and not the krb5-server-ldap package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 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."

References

CVSS Scores

version 3.1
Expand this section

NVD

8.8 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
Expand this section

SUSE

6.4 medium
Expand this section

Red Hat

8.8 high