SB2017111705 - Red Hat update for MozillaFirefox
Published: November 17, 2017 Updated: November 22, 2017
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Buffer overflow (CVE-ID: CVE-2017-7826)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to unspecified boundary errors when processing web pages. A remote unauthenticated attacker can create a specially crafted web page, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
2) Use-after-free (CVE-ID: CVE-2017-7828)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to use-after-free error when flushing and resizing layout because the PressShell object has been freed while still in use. A remote unauthenticated attacker can create a specially crafted web page, trick the victim into opening it and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
3) Cross-origin information disclosure (CVE-ID: CVE-2017-7830)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to an error when processing cross-origin iframes in the Resource Timing API. A remote attacker can gain access to data, related to another URL.
Remediation
Install update from vendor's website.