CVE-2018-18493

Mozilla: Buffer overflow in accelerated 2D canvas with Skia

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A buffer overflow can occur in the Skia library during buffer offset calculations with hardware accelerated canvas 2D actions due to the use of 32-bit calculations instead of 64-bit. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.4, Firefox ESR < 60.4, and Firefox < 64.

Puede ocurrir un desbordamiento de búfer en la librería SKIA durante los cálculos de un desplazamiento de búfer con acciones de hardware aceleradas de CANVAS 2D, debido al uso de cálculos de 32-bit en vez de 64-bit. Esto resulta en un cierre inesperado potencialmente explotable. Esta vulnerabilidad afecta a las versiones anteriores a la 60.4 de Thunderbird, las versiones anteriores a la 60.4 de Firefox ESR y las versiones anteriores a la 64 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
2018-12-13 CVE Published
2024-08-05 CVE Updated
2024-10-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CAPEC

References (16)

URL	Tag	Source
http://www.securityfocus.com/bid/106168	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/12/msg00002.html	Mailing List

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2018:3831	2019-03-11
https://access.redhat.com/errata/RHSA-2018:3833	2019-03-11
https://access.redhat.com/errata/RHSA-2019:0159	2019-03-11
https://access.redhat.com/errata/RHSA-2019:0160	2019-03-11
https://security.gentoo.org/glsa/201903-04	2019-03-11
https://usn.ubuntu.com/3844-1	2019-03-11
https://usn.ubuntu.com/3868-1	2019-03-11
https://www.debian.org/security/2018/dsa-4354	2019-03-11
https://www.debian.org/security/2019/dsa-4362	2019-03-11
https://www.mozilla.org/security/advisories/mfsa2018-29	2019-03-11
https://www.mozilla.org/security/advisories/mfsa2018-30	2019-03-11
https://www.mozilla.org/security/advisories/mfsa2018-31	2019-03-11
https://access.redhat.com/security/cve/CVE-2018-18493	2019-01-24
https://bugzilla.redhat.com/show_bug.cgi?id=1658400	2019-01-24

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"				< 64.0 Search vendor "Mozilla" for product "Firefox" and version " < 64.0"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				< 60.4.0 Search vendor "Mozilla" for product "Firefox Esr" and version " < 60.4.0"		-		Affected
Mozilla Search vendor "Mozilla"		Thunderbird Search vendor "Mozilla" for product "Thunderbird"				< 60.4.0 Search vendor "Mozilla" for product "Thunderbird" and version " < 60.4.0"		-		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
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
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