Use-after-free in Firefox ESR and Mozilla Firefox - CVE-2017-7828

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Main Vulnerability Database Vulnerabilities #VU9316

Use-after-free in Firefox ESR and Mozilla Firefox - CVE-2017-7828

Published: November 14, 2017 / Updated: November 15, 2017


Vulnerability identifier: #VU9316
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-2017-7828
CWE-ID: CWE-416
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 use-after-free error when flushing and resizing layout because the PressShell object has been freed while still in use. A remote unauthenticated attacker can create a specially crafted web page, trick the victim into opening it 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
Debian Linux
Gentoo Linux
Arch Linux
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux Workstation
SUSE Linux
Ubuntu
Opensuse
Mozilla Thunderbird

How to mitigate CVE-2017-7828

Update to version Firefox 57 or Firefox ESR 52.5.


External References

Related Security Bulletins