⚠ Actively exploited
Added to CISA KEV on 2021-11-03. Federal agencies required to patch by 2021-11-17. Required action: Apply updates per vendor instructions..

CVE-2021-30633 — Use After Free in Google Chrome

CWE-416 — Use After Free15 documents12 sources
Severity
9.6CRITICALNVD
EPSS
38.2%
top 2.77%
CISA KEV
KEV
Added 2021-11-03
Due 2021-11-17
Exploit
Exploited in wild
Active exploitation observed
Affected products
6
Google ChromeChromiumDebian Chromium+3 more
Timeline
PublishedOct 8
KEV addedNov 3
KEV dueNov 17
Latest updateJun 9
CISA Required Action: Apply updates per vendor instructions.

Description

Use after free in Indexed DB API in Google Chrome prior to 93.0.4577.82 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:HExploitability: 2.8 | Impact: 6.0

Affected Packages6 packages

▶CVEListV5google/chromeunspecified — 93.0.4577.82
▶NVDgoogle/chrome< 93.0.4577.82
▶debiandebian/chromium< chromium 93.0.4577.82-1 (bookworm)
▶Debianchromium/chromium< 93.0.4577.82-1+3

Also affects: Fedora 33, 35

🔴Vulnerability Details

5
GHSA
GHSA-7pph-hp2f-gxfg: Use after free in Indexed DB API in Google Chrome prior to 93↗2022-05-24
▶
Project0
The More You Know, The More You Know You Don’t Know - Project Zero↗2022-04-01
▶
OSV
CVE-2021-30633: Use after free in Indexed DB API in Google Chrome prior to 93↗2021-10-08
▶
VulnCheck
Google Chromium Indexed DB API Use-After-Free Vulnerability↗2021
▶
Project0
Project Zero RCA: CVE-2021-30632: Chrome Turbofan Type confusion in Global property access↗
▶

📋Vendor Advisories

4
CISA
Google Chromium Indexed DB API Use-After-Free Vulnerability↗2021-11-03
▶
Microsoft
Chromium: CVE-2021-30633 Use after free in Indexed DB API↗2021-09-14
▶
Chrome
Stable Channel Update for Desktop: CVE-2021-30632↗2021-09-13
▶
Debian
CVE-2021-30633: chromium - Use after free in Indexed DB API in Google Chrome prior to 93.0.4577.82 allowed ...↗2021
▶

🕵️Threat Intelligence

4
Qualys
Managing CISA Known Exploited Vulnerabilities with Qualys VMDR | Qualys↗2022-02-23
▶
Securelist
IT threat evolution in Q3 2021. PC statistics↗2021-11-26
▶
Qualys
Qualys Response to CISA Alert: Binding Operational Directive 22-01↗2021-11-09
▶
Qualys
Qualys Response to CISA Alert: Binding Operational Directive 22-01 | Qualys↗2021-11-09
▶

📄Research Papers

1
arXiv
A Relevance Model for Threat-Centric Ranking of Cybersecurity Vulnerabilities↗2024-06-09
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