SB2020122817 - Privilege escalation in D-Bus
Published: December 28, 2020
Security Bulletin ID
SB2020122817
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: N/A)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error when processing different usernames with the same numeric uid. A local user with ability to change own uid can trigger a use-after-free error and escalate privileges on the system.
Remediation
Install update from vendor's website.