CVE-2018-18498

Published: 11 December 2018

A potential vulnerability leading to an integer overflow can occur during buffer size calculations for images when a raw value is used instead of the checked value. This leads to a possible out-of-bounds write. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.

Priority

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package	Release	Status
firefox Launchpad, Ubuntu, Debian	bionic	Released (64.0+build3-0ubuntu0.18.04.1)
	cosmic	Released (64.0+build3-0ubuntu0.18.10.1)
	trusty	Released (64.0+build3-0ubuntu0.14.04.1)
	upstream	Released (64.0)
	xenial	Released (64.0+build3-0ubuntu0.16.04.1)
thunderbird Launchpad, Ubuntu, Debian	bionic	Released (1:60.4.0+build2-0ubuntu0.18.04.1)
	cosmic	Released (1:60.4.0+build2-0ubuntu0.18.10.1)
	trusty	Released (1:60.4.0+build2-0ubuntu0.14.04.1)
	upstream	Released (60.4)
	xenial	Released (1:60.4.0+build2-0ubuntu0.16.04.1)

Severity score breakdown

Parameter	Value
Base score	9.8
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Join the discussion

Canonical is offering Expanded Security Maintenance

Canonical is offering Ubuntu Expanded Security Maintenance (ESM) for security fixes and essential packages.

Find out more about ESM ›