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Debian DLA-1265-1 : krb5 security update

medium Nessus Plugin ID 106536

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Synopsis

The remote Debian host is missing a security update.

Description

Kerberos, a system for authenticating users and services on a network, was affected by several vulnerabilities. The Common Vulnerabilities and Exposures project identifies the following issues.

CVE-2013-1418 Kerberos allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted request when multiple realms are configured.

CVE-2014-5351 Kerberos sends old keys in a response to a -randkey
-keepold request, which allows remote authenticated users to forge tickets by leveraging administrative access.

CVE-2014-5353 When the KDC uses LDAP, allows remote authenticated users to cause a denial of service (daemon crash) via a successful LDAP query with no results, as demonstrated by using an incorrect object type for a password policy.

CVE-2014-5355 Kerberos expects that a krb5_read_message data field is represented as a string ending with a '\0' character, which allows remote attackers to (1) cause a denial of service (NULL pointer dereference) via a zero-byte version string or (2) cause a denial of service (out-of-bounds read) by omitting the '\0' character,

CVE-2016-3119 Kerberos allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted request to modify a principal.

CVE-2016-3120 Kerberos allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via an S4U2Self request.

For Debian 7 'Wheezy', these problems have been fixed in version 1.10.1+dfsg-5+deb7u9.

We recommend that you upgrade your krb5 packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected packages.

See Also

https://lists.debian.org/debian-lts-announce/2018/01/msg00040.html

https://packages.debian.org/source/wheezy/krb5

Plugin Details

Severity: Medium

ID: 106536

File Name: debian_DLA-1265.nasl

Version: 3.6

Type: local

Agent: unix

Published: 2/1/2018

Updated: 9/24/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:krb5-admin-server, p-cpe:/a:debian:debian_linux:krb5-doc, p-cpe:/a:debian:debian_linux:krb5-gss-samples, p-cpe:/a:debian:debian_linux:krb5-kdc, p-cpe:/a:debian:debian_linux:krb5-kdc-ldap, p-cpe:/a:debian:debian_linux:krb5-locales, p-cpe:/a:debian:debian_linux:krb5-multidev, p-cpe:/a:debian:debian_linux:krb5-pkinit, p-cpe:/a:debian:debian_linux:krb5-user, p-cpe:/a:debian:debian_linux:libkadm5clnt-mit8, p-cpe:/a:debian:debian_linux:libkadm5srv-mit8, p-cpe:/a:debian:debian_linux:libkdb5-6, p-cpe:/a:debian:debian_linux:libkrb5-dev, cpe:/o:debian:debian_linux:7.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/31/2018

Reference Information

CVE: CVE-2013-1418, CVE-2014-5351, CVE-2014-5353, CVE-2014-5355, CVE-2016-3119, CVE-2016-3120

BID: 63555, 70380, 71679, 74042

IAVB: 2016-B-0115-S