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Debian DLA-2758-1 : sssd - LTS security update

high Nessus Plugin ID 153431

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Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 9 host has packages installed that are affected by a vulnerability as referenced in the dla-2758 advisory.

 - A flaw was found in SSSD, where the sssctl command was vulnerable to shell command injection via the logs- fetch and cache-expire subcommands. This flaw allows an attacker to trick the root user into running a specially crafted sssctl command, such as via sudo, to gain root access. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-3621)

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

Solution

Upgrade the sssd packages.

For Debian 9 stretch, this problem has been fixed in version 1.15.0-3+deb9u2.

See Also

https://security-tracker.debian.org/tracker/source-package/sssd

https://www.debian.org/lts/security/2021/dla-2758

https://security-tracker.debian.org/tracker/CVE-2021-3621

https://packages.debian.org/source/stretch/sssd

Plugin Details

Severity: High

ID: 153431

File Name: debian_DLA-2758.nasl

Version: 1.4

Type: local

Agent: unix

Published: 9/16/2021

Updated: 1/20/2022

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

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

CVSS Score Source: CVE-2021-3621

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:python-libsss-nss-idmap, p-cpe:/a:debian:debian_linux:python-sss, p-cpe:/a:debian:debian_linux:python3-libipa-hbac, p-cpe:/a:debian:debian_linux:python3-libsss-nss-idmap, p-cpe:/a:debian:debian_linux:python3-sss, p-cpe:/a:debian:debian_linux:sssd, p-cpe:/a:debian:debian_linux:sssd-ad, p-cpe:/a:debian:debian_linux:sssd-ad-common, p-cpe:/a:debian:debian_linux:sssd-common, p-cpe:/a:debian:debian_linux:sssd-dbus, p-cpe:/a:debian:debian_linux:sssd-ipa, p-cpe:/a:debian:debian_linux:sssd-krb5, p-cpe:/a:debian:debian_linux:sssd-krb5-common, p-cpe:/a:debian:debian_linux:sssd-ldap, p-cpe:/a:debian:debian_linux:sssd-proxy, p-cpe:/a:debian:debian_linux:sssd-tools, cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:libipa-hbac-dev, p-cpe:/a:debian:debian_linux:libipa-hbac0, p-cpe:/a:debian:debian_linux:libnss-sss, p-cpe:/a:debian:debian_linux:libpam-sss, p-cpe:/a:debian:debian_linux:libsss-idmap-dev, p-cpe:/a:debian:debian_linux:libsss-idmap0, p-cpe:/a:debian:debian_linux:libsss-nss-idmap-dev, p-cpe:/a:debian:debian_linux:libsss-nss-idmap0, p-cpe:/a:debian:debian_linux:libsss-simpleifp-dev, p-cpe:/a:debian:debian_linux:libsss-simpleifp0, p-cpe:/a:debian:debian_linux:libsss-sudo, p-cpe:/a:debian:debian_linux:libwbclient-sssd, p-cpe:/a:debian:debian_linux:libwbclient-sssd-dev, p-cpe:/a:debian:debian_linux:python-libipa-hbac

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/15/2021

Vulnerability Publication Date: 8/16/2021

Reference Information

CVE: CVE-2021-3621