SB2018081316 - OpenSUSE Linux update for lxc
Published: August 13, 2018
Security Bulletin ID
SB2018081316
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Information disclosure (CVE-ID: CVE-2018-6556)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local unauthenticated attacker to obtain potentially sensitive information on the target system.
The weakness exists due to lxc-user-nic unconditionally opens a user provided path when asked to delete a network interface. A local attacker can check for the existence of a path which he wouldn't otherwise be able to reach and trigger side effects by causing a (read-only) open of special kernel files (ptmx, proc, sys).
Remediation
Install update from vendor's website.