Google Chromium V8 Type Confusion Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2021-11-03
• EPSS: 48% chance of exploitation in the next 30 days (higher than 99% of CVEs)

[ Description ]Official description

Inappropriate implementation in V8 in Google Chrome prior to 86.0.4240.183 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

CISA: Google Chromium V8 Engine contains a type confusion vulnerability that allows a remote attacker to potentially exploit heap corruption via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 3 May 2022): Apply updates per vendor instructions.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• lists.opensuse.org/opensuse-security-announce/2020-11/msg00016.htmlBroken LinkMailing ListThird Party Advisory
• lists.opensuse.org/opensuse-security-announce/2020-11/msg00017.htmlBroken LinkMailing ListThird Party Advisory
• packetstormsecurity.com/files/159974/Chrome-V8-Turbofan-Type-Confusion.htmlExploitThird Party AdvisoryVDB Entry
• chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop.htmlRelease NotesVendor Advisory
• crbug.com/1143772ExploitIssue Tracking
• lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/messag…Release Notes
• lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/messag…Release Notes
• security.gentoo.org/glsa/202011-12Third Party Advisory
• www.debian.org/security/2021/dsa-4824Mailing ListThird Party Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource