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Rocky Linux 8 : krb5 (RLSA-2022:8638)

high Nessus Plugin ID 168480

Synopsis

The remote Rocky Linux host is missing a security update.

Description

The remote Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2022:8638 advisory.

 - 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.
 (CVE-2022-42898)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://bugzilla.redhat.com/show_bug.cgi?id=2140960

https://errata.rockylinux.org/RLSA-2022:8638

Plugin Details

Severity: High

ID: 168480

File Name: rocky_linux_RLSA-2022-8638.nasl

Version: 1.7

Type: local

Published: 12/7/2022

Updated: 11/7/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 7

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2022-42898

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:rocky:linux:krb5-debuginfo, p-cpe:/a:rocky:linux:krb5-debugsource, p-cpe:/a:rocky:linux:krb5-devel, p-cpe:/a:rocky:linux:krb5-devel-debuginfo, p-cpe:/a:rocky:linux:krb5-libs, p-cpe:/a:rocky:linux:krb5-libs-debuginfo, p-cpe:/a:rocky:linux:krb5-pkinit, p-cpe:/a:rocky:linux:krb5-pkinit-debuginfo, p-cpe:/a:rocky:linux:krb5-server, p-cpe:/a:rocky:linux:krb5-server-debuginfo, p-cpe:/a:rocky:linux:krb5-server-ldap, p-cpe:/a:rocky:linux:krb5-server-ldap-debuginfo, p-cpe:/a:rocky:linux:krb5-workstation, p-cpe:/a:rocky:linux:krb5-workstation-debuginfo, p-cpe:/a:rocky:linux:libkadm5, p-cpe:/a:rocky:linux:libkadm5-debuginfo, cpe:/o:rocky:linux:8

Required KB Items: Host/local_checks_enabled, Host/RockyLinux/release, Host/RockyLinux/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/7/2022

Vulnerability Publication Date: 12/7/2022

Reference Information

CVE: CVE-2022-42898