Permissions, Privileges, and Access Controls in Mozilla Firefox - CVE-2019-9797

Vulnerability identifier: #VU18036

CSH Severity: Low

CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-9797

CWE-ID: CWE-264

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to gain unauthorized access to sensitive information.

The vulnerability exists due to incorrect implementation of the cross-origin policy when reading images using createImageBitmap. A remote attacker can trick the victim into visiting a specially crafted web page and gain access to images opened in other browser tabs.

Mozilla Firefox
Arch 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 Scientific Computing
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for Power
Slackware Linux
Opensuse
SUSE Package Hub for SUSE Linux Enterprise
firefox (Ubuntu package)
thunderbird (Ubuntu package)
firefox-esr (Debian package)
firefox-esr (Alpine package)
thunderbird (Debian package)
Mozilla Thunderbird

Install updates from vendor's website.

Mozilla Firefox - update to 66.0
firefox (Ubuntu package) - addressed in versions 66.0.1+build1-0ubuntu0.14.04.1, 66.0.2+build1-0ubuntu0.14.04.1, 66.0.2+build1-0ubuntu0.16.04.1, 66.0.2+build1-0ubuntu0.18.04.1, 66.0.2+build1-0ubuntu0.18.10.1, 66.0.3+build1-0ubuntu0.14.04.1, 66.0.3+build1-0ubuntu0.16.04.1, 66.0.3+build1-0ubuntu0.18.04.1, 66.0.3+build1-0ubuntu0.18.10.1
thunderbird (Ubuntu package) - addressed in versions 1:60.7.0+build1-0ubuntu0.16.04.1, 1:60.7.0+build1-0ubuntu0.18.04.1, 1:60.7.0+build1-0ubuntu0.18.10.1, 1:60.7.0+build1-0ubuntu0.19.04.1
firefox-esr (Debian package) - update to 60.7.0esr-1~deb9u1
Mozilla Thunderbird - update to 60.7.0
firefox-esr (Alpine package) - update to 60.7.0-r0
thunderbird (Debian package) - update to 1:60.7.0-1~deb9u1

• https://www.mozilla.org/en-US/security/advisories/mfsa2019-07/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1528909

• Multiple vulnerabilities in Mozilla Firefox
• Ubuntu update for Firefox
• Ubuntu regression update for Firefox
• Ubuntu regression update for Firefox
• Arch Linux update for firefox
• Multiple vulnerabilities in Mozilla Thunderbird
• Slackware Linux update for mozilla-firefox
• Debian update for firefox-esr
• Ubuntu update for Thunderbird
• OpenSUSE Linux update for MozillaThunderbird
• OpenSUSE Linux update for MozillaFirefox
• OpenSUSE Linux update for MozillaThunderbird
• Debian update for thunderbird
• Red Hat update for thunderbird
• Red Hat update for thunderbird
• Red Hat update for firefox
• Red Hat update for firefox
• Red Hat update for thunderbird
• Red Hat update for firefox
• Permissions, Privileges, and Access Controls in firefox-esr (Alpine package)