CVE-2018-18500

Mozilla: Use-after-free parsing HTML5 stream

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Una vulnerabilidad de memoria previamente liberada puede ocurrir a la hora de analizar una transmisión HTML5 junto con elementos HTML personalizados. Esto resulta en la liberación del objeto de análisis de transmisión mientras está en uso, conduciendo potencialmente a un cierre inesperado explotable. Esta vulnerabilidad afecta a las versiones anteriores a la 60.5 de Thunderbird, las versiones anteriores a la 60.5 de Firefox ESR y las versiones anteriores a la 65 de Firefox.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-10-19 CVE Reserved
2019-01-30 CVE Published
2019-04-18 First Exploit
2024-08-05 CVE Updated
2024-08-31 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-416: Use After Free

CAPEC

References (20)

URL	Tag	Source
http://www.securityfocus.com/bid/106781	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/01/msg00025.html	Mailing List
https://lists.debian.org/debian-lts-announce/2019/02/msg00024.html	Mailing List

URL	Date	SRC
https://github.com/sophoslabs/CVE-2018-18500	2019-04-18

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00021.html	2019-04-02
https://access.redhat.com/errata/RHSA-2019:0218	2019-04-02
https://access.redhat.com/errata/RHSA-2019:0219	2019-04-02
https://access.redhat.com/errata/RHSA-2019:0269	2019-04-02
https://access.redhat.com/errata/RHSA-2019:0270	2019-04-02
https://security.gentoo.org/glsa/201903-04	2019-04-02
https://security.gentoo.org/glsa/201904-07	2019-04-02
https://usn.ubuntu.com/3874-1	2019-04-02
https://usn.ubuntu.com/3897-1	2019-04-02
https://www.debian.org/security/2019/dsa-4376	2019-04-02
https://www.debian.org/security/2019/dsa-4392	2019-04-02
https://www.mozilla.org/security/advisories/mfsa2019-01	2019-04-02
https://www.mozilla.org/security/advisories/mfsa2019-02	2019-04-02
https://www.mozilla.org/security/advisories/mfsa2019-03	2019-04-02
https://access.redhat.com/security/cve/CVE-2018-18500	2019-02-04
https://bugzilla.redhat.com/show_bug.cgi?id=1670631	2019-02-04

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mozilla Search vendor "Mozilla"		Firefox Search vendor "Mozilla" for product "Firefox"				< 65.0 Search vendor "Mozilla" for product "Firefox" and version " < 65.0"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				< 60.5 Search vendor "Mozilla" for product "Firefox Esr" and version " < 60.5"		-		Affected
Mozilla Search vendor "Mozilla"		Thunderbird Search vendor "Mozilla" for product "Thunderbird"				< 60.5 Search vendor "Mozilla" for product "Thunderbird" and version " < 60.5"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.10"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop"				6.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop"				7.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				6.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				7.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Aus Search vendor "Redhat" for product "Enterprise Linux Server Aus"				7.6 Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.6"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Eus Search vendor "Redhat" for product "Enterprise Linux Server Eus"				7.6 Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "7.6"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Tus Search vendor "Redhat" for product "Enterprise Linux Server Tus"				7.6 Search vendor "Redhat" for product "Enterprise Linux Server Tus" and version "7.6"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				6.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "6.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				7.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "7.0"		-		Affected