PT-2021-18770 · Google+2 · Google Chrome+2

Khalil Zhani · Published 2021-05-25 · Updated 2021-11-23 · CVE-2021-30542

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Google Chrome versions prior to 91.0.4472.77

Description The issue allows an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted HTML page. This is due to a use after free in Tab Strip.

Recommendations For versions prior to 91.0.4472.77, update to version 91.0.4472.77 or later to resolve the issue. As a temporary workaround, consider disabling the installation of extensions until the update is applied. Restrict access to crafted HTML pages to minimize the risk of exploitation.

Exploit

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALT-PU-2021-1876

ALT-PU-2021-1972

ALT-PU-2021-2007

ALT-PU-2021-2009

ALT-PU-2021-2141

CVE-2021-30542

Affected Products

Alt Linux

Astra Linux

Google Chrome

References · 17

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/browser/chrome_cve_2021_21220_v8_insufficient_validation.rb · Exploit
• 🔥 https://github.com/xmzyshypnc/CVE-2021-30551 · Exploit
• 🔥 https://github.com/security-dbg/CVE-2021-21220 · Exploit
• 🔥 https://crbug.com/1184954 · Exploit
• 🔥❌ https://github.com/ohnonoyesyes/CVE-2021-21224 · Exploit, Deleted
• https://nvd.nist.gov/vuln/detail/CVE-2021-30542 · Security Note
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4DDW7HAHTS3SDVXBQUY4SURELO5D4X7R · Vendor Advisory
• https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WKQDE3PWDKASAPSUJYMOQGL73L3YQRFS · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-30542 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-30542 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-30542 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-30542 · Security Note
• https://osv.dev/vulnerability/CVE-2021-30542 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-30542 · Vendor Advisory