SB2020050636 - Permissions, Privileges, and Access Controls in firefox (Alpine package)
Published: May 6, 2020
Security Bulletin ID
SB2020050636
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-12391)
CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to documents formed using data: URLs in an object element failed to inherit the CSP of the creating context. A remote attacker can execute arbitrary scripts that should have been blocked, albeit with a unique opaque origin.
Remediation
Install update from vendor's website.