SB2020073025 - Red Hat Enterprise Linux 6 update for firefox
Published: July 30, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Use-after-free (CVE-ID: CVE-2020-6463)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to use-after-free error in ANGLE in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger a heap-based buffer overflow and execute arbitrary code on the system.
2) Improperly implemented security check for standard (CVE-ID: CVE-2020-6514)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to WebRTC used the memory address of a class instance as a connection identifier. A remote attacker can use the obtained value to bypass ASLR protection.3) Information disclosure (CVE-ID: CVE-2020-15652)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output in stack trace for JavaScript errors. A remote attacker can obtain result of a cross-origin redirect.
4) Buffer overflow (CVE-ID: CVE-2020-15659)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing HTML content. A remote 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.
Remediation
Install update from vendor's website.