Vulnerability Monitor

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CVE-2020-6821

When reading from areas partially or fully outside the source resource with WebGL's <code>copyTexSubImage</code> 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.

Published

2020-04-24T16:15:13.510

Last Modified

2024-11-21T05:36:14.410

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-908

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	firefox	< 75.0	Yes
Application	mozilla	firefox_esr	< 68.7.0	Yes
Application	mozilla	thunderbird	< 68.7.0	Yes

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1625404 Issue Tracking, Permissions Required ([email protected])
https://usn.ubuntu.com/4335-1/ Third Party Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2020-12/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2020-13/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2020-14/ Vendor Advisory ([email protected])
https://bugzilla.mozilla.org/show_bug.cgi?id=1625404 Issue Tracking, Permissions Required (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/4335-1/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2020-12/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2020-13/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2020-14/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)