SB2018120315 - Security restrictions bypass in SSSD
Published: December 3, 2018
Security Bulletin ID
SB2018120315
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper access control (CVE-ID: CVE-2019-3811)
The vulnerability allows an adjacent authenticated attacker to bypass security restrictions.
The vulnerability exists due to the return of '/' (the root directory) instead of '' (the empty string / no home directory) if a user was configured with no home directory set. An adjacent attacker can bypass services that restrict the user's filesystem access to within their home directory through chroot().
Remediation
Install update from vendor's website.