Several security issues were fixed in Spidermonkey.
Multiple memory safety issues were fixed in Spidermonkey. An attacker could potentially exploit these to cause a denial of service, or execute arbitrary code.
19 June 2018
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in Spidermonkey.
Multiple memory safety issues were fixed in Spidermonkey. An attacker could potentially exploit these to cause a denial of service, or execute arbitrary code.
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make all the necessary changes.