Buffer overflow in Mozilla Firefox - CVE-2018-18493

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Main Vulnerability Database Vulnerabilities #VU16448

Buffer overflow in Mozilla Firefox - CVE-2018-18493

Published: December 11, 2018


Vulnerability identifier: #VU16448
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-2018-18493
CWE-ID: CWE-120
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 weakness exists due to boundary error in the Skia library during buffer offset calculations with hardware accelerated canvas 2D actions due to the use of 32-bit calculations instead of 64-bit. A remote attacker can trick the victim into visiting a specially crafted website, trigger memory corruption and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Affected software

Mozilla Firefox
Firefox ESR
Gentoo Linux
Arch Linux
Debian Linux
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for ARM
Slackware Linux
Opensuse
SUSE Package Hub for SUSE Linux Enterprise
Mozilla Thunderbird
Dell EMC Unity VSA Operating Environment (OE)
Dell EMC Unity Operating Environment (OE)
EMC Cloud Tiering Appliance

How to mitigate CVE-2018-18493

Update to version 64.0.

Mozilla Firefox - update to 64.0
Mozilla Thunderbird - update to 60.4
Firefox ESR - update to 60.4.0
Dell EMC Unity VSA Operating Environment (OE) - update to 5.0.0.0.5.116
Dell EMC Unity Operating Environment (OE) - update to 5.0.0.0.5.116
EMC Cloud Tiering Appliance - update to 12.1.0.65

External References

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