Use-after-free error in Firefox ESR - CVE-2018-5096

Vulnerability identifier: #VU10183

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-2018-5096

CWE-ID: CWE-416

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 weakness exists due to use-after-free error during WebRTC connections while editing events in form elements on a page. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Firefox ESR
Gentoo Linux
Debian Linux
Red Hat Enterprise Linux for x86_64
SUSE Linux
Opensuse
OTRS
Mozilla Thunderbird
firefox-esr (Alpine package)

Update to version 52.6.

firefox-esr (Alpine package) - update to 52.6.0-r0

• https://www.mozilla.org/en-US/security/advisories/mfsa2018-03/

• Debian update for firefox-esr
• Red Hat update for MozillaFirefox
• openSUSE update for MozillaFirefox
• Multiple vulnerabilities in Mozilla Thunderbird
• SUSE Linux update for MozillaThunderbird
• Debian update for thunderbird
• Red Hat update for Mozilla Thunderbird
• SUSE Linux update for Mozilla Firefox
• SUSE Linux update for Mozilla Firefox
• Gentoo update for Mozilla Firefox
• OpenSUSE Linux update for MozillaThunderbird
• Gentoo update for Mozilla Thunderbird
• Use-after-free error in firefox-esr (Alpine package)