Debian DLA-2771-1 : krb5 - LTS security update

medium Nessus Plugin ID 153808

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Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-2771 advisory.

Several vulnerabilities were fixed in MIT Kerberos, a system for authenticating users and services on a network. CVE-2018-5729 CVE-2018-5730 Fix flaws in LDAP DN checking. CVE-2018-20217 Ignore password attributes for S4U2Self requests. CVE-2021-37750 Fix KDC null deref on TGS inner body null server. For Debian 9 stretch, these problems have been fixed in version 1.15-1+deb9u3. We recommend that you upgrade your krb5 packages. For the detailed security status of krb5 please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/krb5 Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at:
https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian 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

Upgrade the krb5 packages.

For Debian 9 stretch, these problems have been fixed in version 1.15-1+deb9u3.

Plugin Details

Severity: Medium

ID: 153808

File Name: debian_DLA-2771.nasl

Version: 1.4

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 10/1/2021

Updated: 1/24/2025

Supported Sensors: 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: 6.5

Temporal Score: 4.8

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

CVSS Score Source: CVE-2018-5729

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.1

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:krb5-pkinit, p-cpe:/a:debian:debian_linux:libkrb5support0, cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:krb5-gss-samples, p-cpe:/a:debian:debian_linux:libkrad0, p-cpe:/a:debian:debian_linux:libkdb5-8, p-cpe:/a:debian:debian_linux:libkrad-dev, p-cpe:/a:debian:debian_linux:libkadm5clnt-mit11, p-cpe:/a:debian:debian_linux:krb5-kdc, p-cpe:/a:debian:debian_linux:krb5-otp, p-cpe:/a:debian:debian_linux:krb5-admin-server, p-cpe:/a:debian:debian_linux:libgssapi-krb5-2, p-cpe:/a:debian:debian_linux:libkrb5-dev, p-cpe:/a:debian:debian_linux:libkadm5srv-mit11, p-cpe:/a:debian:debian_linux:krb5-multidev, p-cpe:/a:debian:debian_linux:libgssrpc4, p-cpe:/a:debian:debian_linux:libk5crypto3, p-cpe:/a:debian:debian_linux:libkrb5-dbg, p-cpe:/a:debian:debian_linux:krb5-locales, p-cpe:/a:debian:debian_linux:krb5-user, p-cpe:/a:debian:debian_linux:libkrb5-3, p-cpe:/a:debian:debian_linux:krb5-kpropd, p-cpe:/a:debian:debian_linux:krb5-doc, p-cpe:/a:debian:debian_linux:krb5-k5tls, p-cpe:/a:debian:debian_linux:krb5-kdc-ldap

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/30/2021

Vulnerability Publication Date: 2/13/2018

Reference Information

CVE: CVE-2018-20217, CVE-2018-5729, CVE-2018-5730, CVE-2021-37750

IAVB: 2021-B-0054-S

Detections

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