CentOS 7 : krb5 (CESA-2021:4788)

medium Nessus Plugin ID 155821

Synopsis

The remote CentOS Linux host is missing a security update.

Description

The remote CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the CESA-2021:4788 advisory.

- krb5: NULL pointer dereference in process_tgs_req() in kdc/do_tgs_req.c via a FAST inner body that lacks server field (CVE-2021-37750)

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

http://www.nessus.org/u?cdd37c8e

https://cwe.mitre.org/data/definitions/476.html

Plugin Details

Severity: Medium

ID: 155821

File Name: centos_RHSA-2021-4788.nasl

Version: 1.2

Type: local

Agent: unix

Published: 12/3/2021

Updated: 12/3/2021

Supported Sensors: Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure

Risk Information

CVSS Score Source: CVE-2021-37750

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:centos:centos:krb5-devel, p-cpe:/a:centos:centos:krb5-libs, p-cpe:/a:centos:centos:krb5-pkinit, p-cpe:/a:centos:centos:krb5-server, p-cpe:/a:centos:centos:krb5-server-ldap, p-cpe:/a:centos:centos:krb5-workstation, p-cpe:/a:centos:centos:libkadm5, cpe:/o:centos:centos:7

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/2/2021

Vulnerability Publication Date: 8/23/2021

Reference Information

CVE: CVE-2021-37750

IAVB: 2021-B-0054

RHSA: 2021:4788

CWE: 476