SB2021021406 - Information disclosure in Facebook Zstandard
Published: February 14, 2021 Updated: March 4, 2021
Security Bulletin ID
SB2021021406
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) Incorrect default permissions (CVE-ID: N/A)
CWE-ID: CWE-276 - Incorrect Default Permissions
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/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 zstd temporarily
exposes a world-readable version of its input even if the original
file had restrictive permissions. A local user with access to the system can gain access to sensitive information.
Remediation
Install update from vendor's website.