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Rocky Linux 8 : krb5 (RLSA-2021:1593)

high Nessus Plugin ID 184686

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-2021:1593 advisory.

 - MIT Kerberos 5 (aka krb5) before 1.17.2 and 1.18.x before 1.18.3 allows unbounded recursion via an ASN.1-encoded Kerberos message because the lib/krb5/asn.1/asn1_encode.c support for BER indefinite lengths lacks a recursion limit. (CVE-2020-28196)

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://errata.rockylinux.org/RLSA-2021:1593

https://bugzilla.redhat.com/show_bug.cgi?id=1835713

https://bugzilla.redhat.com/show_bug.cgi?id=1868039

https://bugzilla.redhat.com/show_bug.cgi?id=1869055

https://bugzilla.redhat.com/show_bug.cgi?id=1872689

https://bugzilla.redhat.com/show_bug.cgi?id=1901041

Plugin Details

Severity: High

ID: 184686

File Name: rocky_linux_RLSA-2021-1593.nasl

Version: 1.1

Type: local

Published: 11/6/2023

Updated: 11/7/2023

Supported Sensors: Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 4.1

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

CVSS Score Source: CVE-2020-28196

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 7

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

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

Vulnerability Information

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

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/18/2021

Vulnerability Publication Date: 11/5/2020

Reference Information

CVE: CVE-2020-28196