PT-2020-19245 · Mozilla+2 · Firefox+2

Leon Visscher · Published 2020-04-07 · Updated 2024-12-12 · CVE-2020-6823

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Firefox versions prior to 75

Description A malicious extension could exploit the issue by calling the browser.identity.launchWebAuthFlow function, controlling the redirect uri, and obtaining the Auth code through the returned Promise, potentially gaining access to the user's account at the service provider.

Recommendations For versions prior to 75, update to version 75 or later to resolve the issue. As a temporary workaround, consider restricting the use of the browser.identity.launchWebAuthFlow function until a patch is applied.

Exploit

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

ALT-PU-2020-1760

ALT-PU-2020-2408

ALT-PU-2020-2933

ALT-PU-2020-3442

ALT-PU-2021-1368

ALT-PU-2021-3368

CVE-2020-6823

OPENSUSE-SU-2024:10600-1

OPENSUSE-SU-2024:14572-1

USN-4323-1

Affected Products

Alt Linux

Firefox

Ubuntu

References · 1889

• 🔥 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-2020-6824 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-6823 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-6823 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-4323-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-6823 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-6821 · Vendor Advisory