PT-2020-19244 · Mozilla+5 · Firefox+7

Jeff Gilbert + 1 · Published 2020-04-07 · Updated 2024-12-12 · CVE-2020-6821

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 75 Firefox ESR versions prior to 68.7 Thunderbird versions prior to 68.7.0

Description The issue is related to the WebGL's copyTexSubImage method, where reading from areas outside the source resource could lead to potentially sensitive data disclosure due to uninitialized memory. This could result in the exposure of sensitive information.

Recommendations For Firefox versions prior to 75, update to version 75 or later. For Firefox ESR versions prior to 68.7, update to version 68.7 or later. For Thunderbird versions prior to 68.7.0, update to version 68.7.0 or later.

Exploit

Fix

Use of Uninitialized Resource

Weakness Enumeration

CWE-908

Related Identifiers

ALT-PU-2020-1692

ALT-PU-2020-1699

ALT-PU-2020-1701

ALT-PU-2020-1756

ALT-PU-2020-1760

ALT-PU-2020-2408

ALT-PU-2020-2933

ALT-PU-2020-3442

ALT-PU-2021-1368

ALT-PU-2021-3368

CESA-2020_1406

CESA-2020_1429

CESA-2020_1488

CESA-2020_1489

CESA-2020_1495

CVE-2020-6821

DLA-2170-1

DLA-2172-1

DSA-4655-1

DSA-4656-1

MGASA-2020-0163

MGASA-2020-0170

OPENSUSE-SU-2020:0493-1

OPENSUSE-SU-2020:0520-1

OPENSUSE-SU-2020:0544-1

OPENSUSE-SU-2020_0493-1

OPENSUSE-SU-2020_0520-1

OPENSUSE-SU-2020_0544-1

OPENSUSE-SU-2024:10600-1

OPENSUSE-SU-2024:10601-1

OPENSUSE-SU-2024:14572-1

RHSA-2020:1404

RHSA-2020:1406

RHSA-2020:1420

RHSA-2020:1429

RHSA-2020:1488

RHSA-2020:1489

RHSA-2020:1495

RHSA-2020:1496

RHSA-2020_1406

RHSA-2020_1420

RHSA-2020_1429

RHSA-2020_1488

RHSA-2020_1489

RHSA-2020_1495

SUSE-SU-2020:0971-1

SUSE-SU-2020:0978-1

SUSE-SU-2020:1027-1

SUSE-SU-2020:14339-1

SUSE-SU-2020_0971-1

SUSE-SU-2020_0978-1

SUSE-SU-2020_14339-1

USN-4323-1

USN-4328-1

USN-4335-1

Affected Products

Alt Linux

Centos

Firefox

Firefox Esr

Red Hat

Suse

Thunderbird

Ubuntu

References · 2063

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/browser/firefox_jit_use_after_free.rb · Exploit
• 🔥 https://github.com/maxpl0it/CVE-2019-17026-Exploit · Exploit
• 🔥 https://github.com/aleksejspopovs/cve-2020-16012 · Exploit
• 🔥 https://github.com/lsw29475/CVE-2019-17026 · Exploit
• 🔥 https://github.com/R0jhack/CVE-2020-6514 · Exploit
• 🔥 https://github.com/hasan-khalil/CVE-2020-6514 · Exploit
• 🔥 https://github.com/HassanAzze/CVE-2020-6514 · Exploit
• 🔥 https://github.com/rojhack/CVE-2020-6514 · Exploit
• 🔥❌ https://github.com/marcinguy/CVE-2020-15999 · Exploit, Deleted
• https://ubuntu.com/security/CVE-2020-6795 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-6794 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-11758 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:10601-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2020:0971-1 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6821 · Security Note