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Amazon Linux AMI : sssd (ALAS-2017-935)

high Nessus Plugin ID 105420

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Synopsis

The remote Amazon Linux AMI host is missing a security update.

Description

Unsanitized input when searching in local cache database

It was found that sssd's sysdb_search_user_by_upn_res() function did not sanitize requests when querying its local cache and was vulnerable to injection. In a centralized login environment, if a password hash was locally cached for a given user, an authenticated attacker could use this flaw to retrieve it. (CVE-2017-12173)

Solution

Run 'yum update sssd' to update your system.

See Also

https://alas.aws.amazon.com/ALAS-2017-935.html

Plugin Details

Severity: High

ID: 105420

File Name: ala_ALAS-2017-935.nasl

Version: 3.3

Type: local

Agent: unix

Published: 12/26/2017

Updated: 10/1/2018

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4

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

CVSS v3

Risk Factor: High

Base Score: 8.8

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

Vulnerability Information

CPE: p-cpe:/a:amazon:linux:sssd-krb5, p-cpe:/a:amazon:linux:libsss_sudo, p-cpe:/a:amazon:linux:libsss_certmap, p-cpe:/a:amazon:linux:libsss_nss_idmap-devel, p-cpe:/a:amazon:linux:sssd-ad, p-cpe:/a:amazon:linux:libsss_idmap-devel, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:sssd-proxy, p-cpe:/a:amazon:linux:python27-sss-murmur, p-cpe:/a:amazon:linux:libsss_idmap, p-cpe:/a:amazon:linux:python27-sssdconfig, p-cpe:/a:amazon:linux:python27-libipa_hbac, p-cpe:/a:amazon:linux:sssd-dbus, p-cpe:/a:amazon:linux:sssd-common, p-cpe:/a:amazon:linux:sssd-libwbclient, p-cpe:/a:amazon:linux:sssd, p-cpe:/a:amazon:linux:sssd-ldap, p-cpe:/a:amazon:linux:sssd-winbind-idmap, p-cpe:/a:amazon:linux:libipa_hbac-devel, p-cpe:/a:amazon:linux:libsss_simpleifp-devel, p-cpe:/a:amazon:linux:sssd-debuginfo, p-cpe:/a:amazon:linux:sssd-common-pac, p-cpe:/a:amazon:linux:libsss_autofs, p-cpe:/a:amazon:linux:libsss_certmap-devel, p-cpe:/a:amazon:linux:sssd-ipa, p-cpe:/a:amazon:linux:sssd-client, p-cpe:/a:amazon:linux:python27-libsss_nss_idmap, p-cpe:/a:amazon:linux:sssd-krb5-common, p-cpe:/a:amazon:linux:sssd-tools, p-cpe:/a:amazon:linux:libsss_simpleifp, p-cpe:/a:amazon:linux:python27-sss, p-cpe:/a:amazon:linux:libipa_hbac, p-cpe:/a:amazon:linux:sssd-libwbclient-devel, p-cpe:/a:amazon:linux:libsss_nss_idmap

Required KB Items: Host/local_checks_enabled, Host/AmazonLinux/release, Host/AmazonLinux/rpm-list

Patch Publication Date: 12/21/2017

Reference Information

CVE: CVE-2017-12173

ALAS: 2017-935