Detections
Analytics
Amazon Linux 2 : krb5 (ALAS-2022-1845)
high Nessus Plugin ID 165992
Language:
Synopsis
The remote Amazon Linux 2 host is missing a security update.Description
It is, therefore, affected by a vulnerability as referenced in the ALAS2-2022-1845 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
Run 'yum update krb5' to update your system.See Also
Plugin Details
Severity: High
ID: 165992
File Name: al2_ALAS-2022-1845.nasl
Version: 1.4
Type: local
Agent: unix
Published: 10/10/2022
Updated: 10/10/2023
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, 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:amazon:linux:krb5-pkinit, p-cpe:/a:amazon:linux:krb5-devel, p-cpe:/a:amazon:linux:krb5-debuginfo, p-cpe:/a:amazon:linux:libkadm5, p-cpe:/a:amazon:linux:krb5-workstation, cpe:/o:amazon:linux:2, p-cpe:/a:amazon:linux:krb5-server, p-cpe:/a:amazon:linux:krb5-server-ldap, p-cpe:/a:amazon:linux:krb5-libs
Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 9/9/2022
Vulnerability Publication Date: 11/5/2020
Reference Information
CVE: CVE-2020-28196