Photon OS 3.0: Krb5 PHSA-2021-3.0-0342

high Nessus Plugin ID 156583


The remote PhotonOS host is missing multiple security updates.


An update of the krb5 package has been released.

- ec_verify in kdc/kdc_preauth_ec.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.4 and 1.19.x before 1.19.2 allows remote attackers to cause a NULL pointer dereference and daemon crash. This occurs because a return value is not properly managed in a certain situation. (CVE-2021-36222)

- 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)

- The Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.18.5 and 1.19.x before 1.19.3 has a NULL pointer dereference in kdc/do_tgs_req.c via a FAST inner body that lacks a server field.


Update the affected Linux packages.

See Also

Plugin Details

Severity: High

ID: 156583

File Name: PhotonOS_PHSA-2021-3_0-0342_krb5.nasl

Version: 1.7

Type: local

Published: 1/10/2022

Updated: 11/21/2023

Supported Sensors: Nessus

Risk Information


Risk Factor: Low

Score: 3.6


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-2021-36222


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:vmware:photonos:krb5, cpe:/o:vmware:photonos:3.0

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/12/2021

Vulnerability Publication Date: 11/5/2020

Reference Information

CVE: CVE-2020-28196, CVE-2021-36222, CVE-2021-37750

IAVA: 2021-A-0193-S, 2021-A-0487-S

IAVB: 2021-B-0054-S