VulnerabilityAnalyzed
CVE-2021-21148
Google Chromium V8 Heap Buffer Overflow Vulnerability
KEVHIGH 8.8EPSS 20.0%
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 17 November 2021). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
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 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 19.97% probability · 97th percentile
- CISA KEV
- Listed 3 November 2021 · due 17 November 2021
- Weakness
- CWE-787
- Affected
- google/chrome · fedoraproject/fedora · debian/debian linux
- Source
- chrome-cve-admin@google.com
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2021-21148
References
- http://packetstormsecurity.com/files/162579/Chrome-Array-Transfer-Bypass.htmlThird Party Advisory, VDB Entry
- https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_4.htmlRelease Notes
- https://crbug.com/1170176Permissions Required
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7ACWYJ74Z3YN2XH4QMUEGNBC3VXX464L/Release Notes
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUQSMNV7INLDDSD3RKI5S5EAULX2QC7P/Release Notes
- https://security.gentoo.org/glsa/202104-08Third Party Advisory
- https://www.debian.org/security/2021/dsa-4858Mailing List, Third Party Advisory
- http://packetstormsecurity.com/files/162579/Chrome-Array-Transfer-Bypass.htmlThird Party Advisory, VDB Entry
- https://chromereleases.googleblog.com/2021/02/stable-channel-update-for-desktop_4.htmlRelease Notes
- https://crbug.com/1170176Permissions Required
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7ACWYJ74Z3YN2XH4QMUEGNBC3VXX464L/Release Notes
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AUQSMNV7INLDDSD3RKI5S5EAULX2QC7P/Release Notes
- https://security.gentoo.org/glsa/202104-08Third Party Advisory
- https://www.debian.org/security/2021/dsa-4858Mailing List, Third Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21148US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.