CVE-2018-18500

Published: 30 January 2019

A use-after-free vulnerability can occur while parsing an HTML5 stream in concert with custom HTML elements. This results in the stream parser object being freed while still in use, leading to a potentially exploitable crash. This vulnerability affects Thunderbird < 60.5, Firefox ESR < 60.5, and Firefox < 65.

Notes

Author	Note
tyhicks	mozjs contains a copy of the SpiderMonkey JavaScript engine

Priority

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package	Release	Status
firefox Launchpad, Ubuntu, Debian	bionic	Released (65.0+build2-0ubuntu0.18.04.1)
	cosmic	Released (65.0+build2-0ubuntu0.18.10.1)
	disco	Released (65.0+build2-0ubuntu1)
	eoan	Released (65.0+build2-0ubuntu1)
	focal	Released (65.0+build2-0ubuntu1)
	groovy	Released (65.0+build2-0ubuntu1)
	hirsute	Released (65.0+build2-0ubuntu1)
	impish	Released (65.0+build2-0ubuntu1)
	jammy	Released (65.0+build2-0ubuntu1)
	kinetic	Released (65.0+build2-0ubuntu1)
	lunar	Released (65.0+build2-0ubuntu1)
	trusty	Released (65.0+build2-0ubuntu0.14.04.1)
	upstream	Released (65.0)
	xenial	Released (65.0+build2-0ubuntu0.16.04.1)
mozjs38 Launchpad, Ubuntu, Debian	bionic	Needs triage
	cosmic	Does not exist
	disco	Does not exist
	eoan	Does not exist
	focal	Does not exist
	groovy	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
mozjs52 Launchpad, Ubuntu, Debian	bionic	Needs triage
	cosmic	Ignored (reached end-of-life)
	disco	Ignored (reached end-of-life)
	eoan	Ignored (reached end-of-life)
	focal	Needs triage
	groovy	Ignored (reached end-of-life)
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
mozjs60 Launchpad, Ubuntu, Debian	bionic	Does not exist
	cosmic	Ignored (reached end-of-life)
	disco	Ignored (reached end-of-life)
	eoan	Ignored (reached end-of-life)
	focal	Does not exist
	groovy	Does not exist
	hirsute	Does not exist
	impish	Does not exist
	jammy	Does not exist
	kinetic	Does not exist
	lunar	Does not exist
	trusty	Does not exist
	upstream	Needs triage
	xenial	Does not exist
thunderbird Launchpad, Ubuntu, Debian	bionic	Released (1:60.5.1+build2-0ubuntu0.18.04.1)
	cosmic	Released (1:60.5.1+build2-0ubuntu0.18.10.1)
	disco	Released (1:60.5.1+build2-0ubuntu1)
	eoan	Released (1:60.5.1+build2-0ubuntu1)
	focal	Released (1:60.5.1+build2-0ubuntu1)
	groovy	Released (1:60.5.1+build2-0ubuntu1)
	hirsute	Released (1:60.5.1+build2-0ubuntu1)
	impish	Released (1:60.5.1+build2-0ubuntu1)
	jammy	Released (1:60.5.1+build2-0ubuntu1)
	kinetic	Released (1:60.5.1+build2-0ubuntu1)
	lunar	Released (1:60.5.1+build2-0ubuntu1)
	trusty	Released (1:60.5.1+build2-0ubuntu0.14.04.1)
	upstream	Released (60.5)
	xenial	Released (1:60.5.1+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

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