CVE-2019-11693

The bufferdata function in WebGL is vulnerable to a buffer overflow with specific graphics drivers on Linux. This could result in malicious content freezing a tab or triggering a potentially exploitable crash. *Note: this issue only occurs on Linux. Other operating systems are unaffected.*. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.

CVSS v3 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector : AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1532525	Issue Tracking Permissions Required Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-13/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-14/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-15/	Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1532525	Issue Tracking Permissions Required Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-13/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-14/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2019-15/	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

OR	cpe:2.3:a:mozilla:firefox::::::::
	cpe:2.3:a:mozilla:firefox::::::::
	cpe:2.3:a:mozilla:thunderbird::::::::

cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*

History

25 Nov 2025, 17:50

Type	Values Removed	Values Added
CPE	cpe:2.3:a:mozilla:firefox_esr::::::::

Information

Published : 2019-07-23 14:15

Updated : 2025-11-25 17:50

NVD link : CVE-2019-11693

Mitre link : CVE-2019-11693

CVE.ORG link : CVE-2019-11693

JSON object : View

Products Affected

linux

linux_kernel

mozilla

thunderbird
firefox

CWE

CWE-787

Out-of-bounds Write

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