⚠ 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-2021-21166 — Race Condition in Google Chrome

CWE-362 — Race ConditionCWE-122 — Heap-based Buffer OverflowCWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer19 documents13 sources
Severity
8.8HIGHNVD
EPSS
36.3%
top 2.87%
CISA KEV
KEV
Added 2021-11-03
Due 2021-11-17
Exploit
Exploited in wild
Active exploitation observed
Affected products
7
Google ChromeChromiumDebian Chromium+4 more
Timeline
PublishedMar 9
KEV addedNov 3
KEV dueNov 17
Latest updateMay 24
CISA Required Action: Apply updates per vendor instructions.

Description

Data race in audio in Google Chrome prior to 89.0.4389.72 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages6 packages

▶CVEListV5google/chromeunspecified — 89.0.4389.72
▶NVDgoogle/chrome< 89.0.4389.72
▶debiandebian/chromium< chromium 89.0.4389.82-1 (bookworm)
▶Debianchromium/chromium< 89.0.4389.82-1+3

Also affects: Debian Linux 10.0, Fedora 32, 33, 34

🔴Vulnerability Details

5
GHSA
GHSA-q4f3-pjpv-9q5x: Data race in audio in Google Chrome prior to 89↗2022-05-24
▶
Project0
The More You Know, The More You Know You Don’t Know - Project Zero↗2022-04-01
▶
OSV
CVE-2021-21166: Data race in audio in Google Chrome prior to 89↗2021-03-09
▶
VulnCheck
Google Chromium Race Condition Vulnerability↗2021
▶
Project0
Project Zero RCA: CVE-2021-21166: Chrome Object Lifecycle Issue in Audio↗
▶

📋Vendor Advisories

4
CISA
Google Chromium Race Condition Vulnerability↗2021-11-03
▶
Microsoft
Chromium CVE-2021-21166: Object lifecycle issue in audio↗2021-03-09
▶
Chrome
Stable Channel Update for Desktop: CVE-2021-21165↗2021-03-02
▶
Debian
CVE-2021-21166: chromium - Data race in audio in Google Chrome prior to 89.0.4389.72 allowed a remote attac...↗2021
▶

🕵️Threat Intelligence

9
Qualys
Managing CISA Known Exploited Vulnerabilities with Qualys VMDR | Qualys↗2022-02-23
▶
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
▶
Securelist
IT threat evolution Q1 2021. Non-mobile statistics↗2021-05-31
▶
Securelist
IT threat evolution Q1 2021. Non-mobile statistics↗2021-05-31
▶