Buffer overflow in Firefox ESR and Mozilla Firefox - CVE-2020-15659

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Main Vulnerability Database Vulnerabilities #VU32899

Buffer overflow in Firefox ESR and Mozilla Firefox - CVE-2020-15659

Published: July 29, 2020 / Updated: July 30, 2020


Vulnerability identifier: #VU32899
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-2020-15659
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 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.


Affected software

Firefox ESR
Mozilla Firefox
Gentoo Linux
Debian Linux
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
CentOS
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Scientific Computing
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
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux Server - AUS
Slackware Linux
Opensuse
Ubuntu
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 (Red Hat package)
firefox-esr (Alpine package)
mozjs68 (Alpine package)
firefox (Alpine package)
firefox-esr (Debian package)
thunderbird (Red Hat package)
thunderbird (Debian package)
firefox (Ubuntu package)
Mozilla Thunderbird

How to mitigate CVE-2020-15659

Install updates from vendor's website.

Firefox ESR - addressed in versions 68.11.0, 78.1.0
Mozilla Firefox - update to 79.0
Mozilla Thunderbird - addressed in versions 68.11.0, 78.0.1
firefox (Red Hat package) - addressed in versions 68.11.0-1.el6_10, 68.11.0-1.el7_8, 68.11.0-1.el8_0, 68.11.0-1.el8_1, 68.11.0-1.el8_2
firefox-esr (Alpine package) - update to 68.11.0-r0
mozjs68 (Alpine package) - update to 68.11.0-r0
firefox (Alpine package) - update to 79.0-r0
firefox-esr (Debian package) - update to 68.11.0esr-1~deb10u1
thunderbird (Red Hat package) - addressed in versions 68.11.0-1.el6_10, 68.11.0-1.el7_8, 68.11.0-1.el8_0, 68.11.0-1.el8_1, 68.11.0-1.el8_2
thunderbird (Debian package) - update to 1:68.11.0-1~deb10u1
firefox (Ubuntu package) - addressed in versions 79.0+build1-0ubuntu0.16.04.2, 79.0+build1-0ubuntu0.18.04.1, 79.0+build1-0ubuntu0.20.04.1

External References

Related Security Bulletins