Buffer overflow in Firefox ESR - CVE-2019-11758

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Main Vulnerability Database Vulnerabilities #VU22174

Buffer overflow in Firefox ESR - CVE-2019-11758

Published: October 23, 2019


Vulnerability identifier: #VU22174
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-2019-11758
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 with installed 360 Total Security. A remote attacker can create a specially crafted web page, trick the victim into visiting 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
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for x86_64
Slackware Linux
Opensuse
thunderbird (Ubuntu package)
firefox-esr (Alpine package)
Mozilla Thunderbird

How to mitigate CVE-2019-11758

Install updates from vendor's website.

Firefox ESR - update to 68.2.0
thunderbird (Ubuntu package) - addressed in versions 1:68.2.1+build1-0ubuntu0.18.04.1, 1:68.2.1+build1-0ubuntu0.19.10.1, 1:68.2.2+build1-0ubuntu0.18.04.1, 1:68.2.2+build1-0ubuntu0.19.10.1, 1:68.7.0+build1-0ubuntu0.16.04.2
Mozilla Thunderbird - update to 68.2.0
firefox-esr (Alpine package) - update to 68.2.0-r0

External References

Related Security Bulletins