PT-2021-4788 · Google+4 · Google Chrome+4

Clément Lecigne · Published 2021-09-21 · Updated 2025-12-04 · CVE-2021-37973

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions Google Chrome versions prior to 94.0.4606.61 Microsoft Edge (affected versions not specified)

Description The issue is related to a use-after-free vulnerability in the Portals component of Google Chrome and Microsoft Edge browsers. This vulnerability can be exploited by a remote attacker who has compromised the renderer process, potentially allowing them to escape the sandbox via a crafted HTML page.

Recommendations For Google Chrome versions prior to 94.0.4606.61, update to version 94.0.4606.61 or later to resolve the issue. For Microsoft Edge, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALT-PU-2021-2962

ALT-PU-2021-2987

ALT-PU-2021-2988

ALT-PU-2021-3044

ALT-PU-2021-3050

ALT-PU-2021-3436

ALT-PU-2021-3603

BDU:2021-05507

CVE-2021-37973

DSA-5046-1

MGASA-2022-0050

OPENSUSE-SU-2021:1339-1

OPENSUSE-SU-2021:1350-1

OPENSUSE-SU-2021_1350-1

OPENSUSE-SU-2024:11555-1

OPENSUSE-SU-2024:11605-1

OPENSUSE-SU-2024:12948-1

Affected Products

Alt Linux

Astra Linux

Google Chrome

Edge

Suse

References · 2373

• 🔥 https://github.com/Phuong39/PoC-CVE-2021-30632 · Exploit
• 🔥 https://github.com/ZeusBox/CVE-2021-37980 · Exploit
• 🔥 https://github.com/SpiralBL0CK/Chrome-V8-RCE-CVE-2021-38003 · Exploit
• 🔥 https://github.com/CrackerCat/CVE-2021-30632 · Exploit
• 🔥 https://github.com/Peterpan0927/TFC-Chrome-v8-bug-CVE-2021-38001-poc · Exploit
• 🔥 https://github.com/maldiohead/TFC-Chrome-v8-bug-CVE-2021-38001-poc · Exploit
• 🔥❌ https://github.com/Lagal1990/CVE-2021-30632 · Exploit, Deleted
• 🔥❌ https://github.com/Expdev893/CVE-2021-30632 · Exploit, Deleted
• https://advisories.mageia.org/MGASA-2022-0050.html · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-37973 · Security Note
• https://lists.fedoraproject.org/archives/list/[e-mail]/thread/2MLX3OHXV7SCLP5MK4AA5TVXPPNSWDUP · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:12948-1 · Vendor Advisory
• https://safe-surf.ru/specialists/bulletins-nkcki/669792 · Security Note
• https://safe-surf.ru/specialists/bulletins-nkcki/669791 · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4DDW7HAHTS3SDVXBQUY4SURELO5D4X7R · Vendor Advisory