Use-after-free error in Mozilla Firefox - CVE-2018-5155

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Main Vulnerability Database Vulnerabilities #VU12529

Use-after-free error in Mozilla Firefox - CVE-2018-5155

Published: May 10, 2018


Vulnerability identifier: #VU12529
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-2018-5155
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 weakness exists due to use-after-free error while adjusting layout during SVG animations with text paths. 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 result may result in system compromise.

Affected software

Mozilla Firefox
Firefox ESR
Gentoo Linux
Debian Linux
Arch Linux
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux for Power
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for ARM
SUSE Linux
Ubuntu
openSUSE Leap
firefox (Ubuntu package)
thunderbird (Ubuntu package)
Mozilla Thunderbird

How to mitigate CVE-2018-5155

Update to version 60.0.

firefox (Ubuntu package) - addressed in versions 60.0+build2-0ubuntu0.14.04.1, 60.0+build2-0ubuntu0.16.04.1, 60.0+build2-0ubuntu0.17.10.1, 60.0+build2-0ubuntu1
thunderbird (Ubuntu package) - addressed in versions 1:52.8.0+build1-0ubuntu0.14.04.1, 1:52.8.0+build1-0ubuntu0.16.04.1, 1:52.8.0+build1-0ubuntu0.17.10.1, 1:52.8.0+build1-0ubuntu0.18.04.1

External References

Related Security Bulletins