SB2017120501 - Multiple vulnerabilities in Mozilla Firefox
Published: December 5, 2017
Security Bulletin ID
SB2017120501
Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Security restrictions bypass (CVE-ID: CVE-2017-7843)
The vulnerability allows a remote attacker to bypass security restrictions on the target system.The weakness exists in web worker while in Private Browsing mode due to improper input validation. A remote attacker can trick the victim into visiting a specially crafted website, bypass private-browsing protections and uniquely fingerprint visitors.to write persistent data to IndexedDB, which was not cleared when exiting and would persist across multiple sessions.
2) Information disclosure (CVE-ID: CVE-2017-7844)
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.The weakness exists due to an error when handling external SVG images from malicious websites. A remote attacker can trick the victim into visiting a specially crafted website, use a combination of an external SVG image referenced on a page and the coloring of anchor links stored within this image and access sensitive information such as stored data and user history.
Remediation
Install update from vendor's website.