Use-after-free error in Mozilla Firefox - CVE-2018-5103

Vulnerability identifier: #VU10171

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-2018-5103

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 mouse event handling. 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.

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

Update to version 58.0.

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

• https://www.mozilla.org/en-US/security/advisories/mfsa2018-02/

• Multiple vulnerabilities in Mozilla Firefox
• Ubuntu update for Firefox
• 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
• Ubuntu update for 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)