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Debian DLA-1643-1 : krb5 security update
medium Nessus Plugin ID 121399
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Synopsis
The remote Debian host is missing a security update.Description
krb5, a MIT Kerberos implementation, had several flaws in LDAP DN checking, which could be used to circumvent a DN containership check by supplying special parameters to some calls.Further an attacker could crash the KDC by making S4U2Self requests.
For Debian 8 'Jessie', these problems have been fixed in version 1.12.1+dfsg-19+deb8u5.
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/2019/01/msg00020.html
Plugin Details
Severity: Medium
ID: 121399
File Name: debian_DLA-1643.nasl
Version: 1.5
Type: local
Agent: unix
Family: Debian Local Security Checks
Published: 1/28/2019
Updated: 1/11/2021
Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless 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:libkrad-dev, p-cpe:/a:debian:debian_linux:krb5-multidev, p-cpe:/a:debian:debian_linux:krb5-pkinit, p-cpe:/a:debian:debian_linux:libkadm5srv-mit9, 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:libkadm5clnt-mit9, p-cpe:/a:debian:debian_linux:krb5-doc, cpe:/o:debian:debian_linux:8.0, p-cpe:/a:debian:debian_linux:libkrb5-dev, p-cpe:/a:debian:debian_linux:krb5-gss-samples, p-cpe:/a:debian:debian_linux:krb5-locales, p-cpe:/a:debian:debian_linux:libkrad0, p-cpe:/a:debian:debian_linux:libkdb5-7, p-cpe:/a:debian:debian_linux:krb5-user, 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: 1/25/2019
Vulnerability Publication Date: 3/6/2018