⚠ 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-2021-21148 — Out-of-bounds Write in Google Chrome

CWE-787 — Out-of-bounds WriteCWE-122 — Heap-based Buffer Overflow21 documents15 sources
Severity
8.8HIGHNVD
EPSS
24.9%
top 3.83%
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
PublishedFeb 9
KEV addedNov 3
KEV dueNov 17
Latest updateMay 24
CISA Required Action: Apply updates per vendor instructions.

Description

Heap buffer overflow in V8 in Google Chrome prior to 88.0.4324.150 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 — 88.0.4324.150
▶NVDgoogle/chrome< 88.0.4324.150
▶debiandebian/chromium< chromium 88.0.4324.150-1 (bookworm)
▶Debianchromium/chromium< 88.0.4324.150-1+3

Also affects: Debian Linux 10.0, Fedora 32, 33

🔴Vulnerability Details

4
GHSA
GHSA-6675-f3rx-hqr9: Heap buffer overflow in V8 in Google Chrome prior to 88↗2022-05-24
▶
Project0
The More You Know, The More You Know You Don’t Know - Project Zero↗2022-04-01
▶
OSV
CVE-2021-21148: Heap buffer overflow in V8 in Google Chrome prior to 88↗2021-02-09
▶
VulnCheck
Google Chromium V8 Heap Buffer Overflow Vulnerability↗2021
▶

📋Vendor Advisories

4
CISA
Google Chromium V8 Heap Buffer Overflow Vulnerability↗2021-11-03
▶
Microsoft
Chromium CVE-2021-21148: Heap buffer overflow in V8↗2021-02-09
▶
Chrome
Stable Channel Update for Desktop: CVE-2021-21148↗2021-02-04
▶
Debian
CVE-2021-21148: chromium - Heap buffer overflow in V8 in Google Chrome prior to 88.0.4324.150 allowed a rem...↗2021
▶

🕵️Threat Intelligence

12
Qualys
Managing CISA Known Exploited Vulnerabilities with Qualys VMDR | Qualys↗2022-02-23
▶
Sentinelone
6 Real-World Threats to Chromebooks and ChromeOS↗2022-01-26
▶
Sentinelone
6 Real-World Threats to Chromebooks and ChromeOS↗2022-01-26
▶
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
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