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Ubuntu 18.04 LTS / 20.04 LTS : Kerberos vulnerabilities (USN-5959-1)

high Nessus Plugin ID 172631

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5959-1 advisory.

 It was discovered that Kerberos incorrectly handled memory when processing KDC data, which could lead to a NULL pointer dereference. An attacker could possibly use this issue to cause a denial of service or have other unspecified impacts. (CVE-2021-36222, CVE-2021-37750)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-5959-1

Plugin Details

Severity: High

ID: 172631

File Name: ubuntu_USN-5959-1.nasl

Version: 1.2

Type: local

Agent: unix

Published: 3/16/2023

Updated: 8/29/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2021-36222

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:krb5-kdc, p-cpe:/a:canonical:ubuntu_linux:krb5-locales, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libk5crypto3, p-cpe:/a:canonical:ubuntu_linux:libkadm5srv-mit11, p-cpe:/a:canonical:ubuntu_linux:libkrb5-dev, p-cpe:/a:canonical:ubuntu_linux:krb5-k5tls, p-cpe:/a:canonical:ubuntu_linux:libkrad-dev, p-cpe:/a:canonical:ubuntu_linux:libkdb5-9, p-cpe:/a:canonical:ubuntu_linux:libkrb5support0, p-cpe:/a:canonical:ubuntu_linux:krb5-kdc-ldap, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:krb5-otp, p-cpe:/a:canonical:ubuntu_linux:libgssrpc4, p-cpe:/a:canonical:ubuntu_linux:libkrb5-3, p-cpe:/a:canonical:ubuntu_linux:krb5-multidev, p-cpe:/a:canonical:ubuntu_linux:krb5-pkinit, p-cpe:/a:canonical:ubuntu_linux:krb5-user, p-cpe:/a:canonical:ubuntu_linux:krb5-kpropd, p-cpe:/a:canonical:ubuntu_linux:libgssapi-krb5-2, p-cpe:/a:canonical:ubuntu_linux:krb5-admin-server, p-cpe:/a:canonical:ubuntu_linux:krb5-gss-samples, p-cpe:/a:canonical:ubuntu_linux:libkrad0, p-cpe:/a:canonical:ubuntu_linux:libkadm5clnt-mit11

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 3/16/2023

Vulnerability Publication Date: 7/22/2021

Reference Information

CVE: CVE-2021-36222, CVE-2021-37750

USN: 5959-1