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Scientific Linux Security Update : realmd on SL7.x x86_64 (20151119)
medium Nessus Plugin ID 87571
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Synopsis
The remote Scientific Linux host is missing one or more security updates.Description
A flaw was found in the way realmd parsed certain input when writing configuration into the sssd.conf or smb.conf file. A remote attacker could use this flaw to inject arbitrary configurations into these files via a newline character in an LDAP response. (CVE-2015-2704)It was found that the realm client would try to automatically join an active directory domain without authentication, which could potentially lead to privilege escalation within a specified domain.
The realmd packages have been upgraded to upstream version 0.16.1, which provides a number of bug fixes and enhancements over the previous version.
This update also fixes the following bugs :
- Joining a Scientific Linux machine to a domain using the realm utility creates /home/domainname/[username]/ directories for domain users. Previously, SELinux labeled the domain users' directories incorrectly. As a consequence, the domain users sometimes experienced problems with SELinux policy. This update modifies the realmd service default behavior so that the domain users' directories are compatible with the standard SELinux policy.
- Previously, the realm utility was unable to join or discover domains with domain names containing underscore (_). The realmd service has been modified to process underscores in domain names correctly, which fixes the described bug.
In addition, this update adds the following enhancement :
- The realmd utility now allows the user to disable automatic ID mapping from the command line. To disable the mapping, pass the '--automatic-id- mapping=no' option to the realmd utility.
Solution
Update the affected realmd, realmd-debuginfo and / or realmd-devel-docs packages.See Also
Plugin Details
Severity: Medium
ID: 87571
File Name: sl_20151119_realmd_on_SL7_x.nasl
Version: 2.4
Type: local
Agent: unix
Published: 12/22/2015
Updated: 1/14/2021
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.2
CVSS v2
Risk Factor: Medium
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
Vulnerability Information
CPE: p-cpe:/a:fermilab:scientific_linux:realmd, p-cpe:/a:fermilab:scientific_linux:realmd-debuginfo, p-cpe:/a:fermilab:scientific_linux:realmd-devel-docs, x-cpe:/o:fermilab:scientific_linux
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Patch Publication Date: 11/19/2015
Vulnerability Publication Date: 5/18/2015
Reference Information
CVE: CVE-2015-2704