SB2018091102 - Security restrictions bypass in NoScript extension for Tor and Firefox ESR
Published: September 11, 2018
Security Bulletin ID
SB2018091102
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) Security feature bypass (CVE-ID: N/A)
CWE-ID: CWE-20 - Improper input validation
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:P/U:Green
The vulnerability allows a remote attacker to bypass implemented security features.
The vulnerability exists due to an error when processing "Content-Type" header. A remote attacker can bypass restrictions imposed by the NoScript browser extension via "text/html;/json" value for the "Content-Type" header and execute arbitrary JavaScript code in browser. The vulnerable extension is used by Tor and Firefox ESR browsers.
Remediation
Install update from vendor's website.