Buffer overflow in Mozilla Firefox - CVE-2020-6825

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Main Vulnerability Database Vulnerabilities #VU26653

Buffer overflow in Mozilla Firefox - CVE-2020-6825

Published: April 7, 2020


Vulnerability identifier: #VU26653
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-6825
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

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 website, 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.


Affected software

Mozilla Firefox
Firefox ESR
Arch Linux
Gentoo Linux
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Scientific Computing
CentOS
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Slackware Linux
Opensuse
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
firefox (Ubuntu package)
firefox-esr (Debian package)
thunderbird (Debian package)
thunderbird (Red Hat package)
firefox-esr (Alpine package)
firefox (Red Hat package)
thunderbird (Ubuntu package)
firefox (Alpine package)
thunderbird (Alpine package)
mozjs68 (Alpine package)
Mozilla Thunderbird

How to mitigate CVE-2020-6825

Install updates from vendor's website.

Mozilla Firefox - update to 75.0
firefox (Ubuntu package) - addressed in versions 75.0+build3-0ubuntu0.16.04.1, 75.0+build3-0ubuntu0.18.04.1, 75.0+build3-0ubuntu0.19.10.1
firefox-esr (Debian package) - addressed in versions 68.7.0esr-1~deb9u1, 68.7.0esr-1~deb10u1
thunderbird (Debian package) - addressed in versions 1:68.7.0-1~deb9u1, 1:68.7.0-1~deb10u1
Mozilla Thunderbird - update to 68.7.0
Firefox ESR - update to 68.7.0
thunderbird (Red Hat package) - addressed in versions 68.7.0-1.el6_10, 68.7.0-1.el7_8, 68.7.0-1.el8_0, 68.7.0-1.el8_1
firefox-esr (Alpine package) - update to 68.7.0-r0
firefox (Red Hat package) - addressed in versions 68.7.0-2.el6_10, 68.7.0-2.el7_8, 68.7.0-2.el8_0, 68.7.0-2.el8_1
thunderbird (Ubuntu package) - update to 1:68.7.0+build1-0ubuntu0.16.04.2
firefox (Alpine package) - update to 75.0-r0
thunderbird (Alpine package) - update to 68.7.0-r0
mozjs68 (Alpine package) - update to 68.7.0-r0

External References

Related Security Bulletins