Buffer overflow in Mozilla Firefox and Firefox ESR - CVE-2020-15670

Vulnerability identifier: #VU46017

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-2020-15670

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: No public exploit available

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.

Mozilla Firefox
Firefox ESR
Opensuse
Ubuntu
firefox (Alpine package)
firefox-esr (Alpine package)
firefox (Ubuntu package)
Firefox for Android
Mozilla Thunderbird

Install updates from vendor's website.

Mozilla Firefox - update to 80.0
Firefox ESR - update to 78.2.0
Firefox for Android - update to 80.1.2
Mozilla Thunderbird - update to 78.2.0
firefox (Ubuntu package) - addressed in versions 80.0+build2-0ubuntu0.16.04.1, 80.0+build2-0ubuntu0.18.04.1, 80.0+build2-0ubuntu0.20.04.1, 80.0.1+build1-0ubuntu0.16.04.1, 80.0.1+build1-0ubuntu0.18.04.1, 80.0.1+build1-0ubuntu0.20.04.1

• https://www.mozilla.org/en-US/security/advisories/mfsa2020-38/
• https://www.mozilla.org/en-US/security/advisories/mfsa2020-36/

• Slackware Linux update for mozilla-firefox
• Multiple vulnerabilities in Mozilla Firefox and Firefox ESR
• Multiple vulnerabilities in Mozilla Thunderbird
• Buffer overflow in firefox-esr (Alpine package)
• Buffer overflow in firefox (Alpine package)
• Multiple vulnerabilities in Firefox for Android
• OpenSUSE Linux update for MozillaFirefox
• OpenSUSE Linux update for MozillaFirefox
• Ubuntu update for firefox
• Ubuntu update for firefox