CVE Vulnerability

CVE-2020-6821

When reading from areas partially or fully outside the source resource with WebGL's copyTexSubImage method, the specification requires the returned values be zero. Previously, this memory was uninitialized, leading to potentially sensitive data disclosure. This vulnerability affects Thunderbird < 68.7.0, Firefox ESR < 68.7, and Firefox < 75.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://www.mozilla.org/security/advisories/mfsa2020-13/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-14/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2020-12/ Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1625404 Issue Tracking Permissions Required
https://usn.ubuntu.com/4335-1/ Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
Information

Published : 2020-04-24 04:15

Updated : 2021-07-21 11:39

NVD link : CVE-2020-6821

Mitre link : CVE-2020-6821

Products Affected
No products.
CWE
CWE-908