Google Chromium Mojo Insufficient Data Validation Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-09-08
• Critical severity: CVSS 9.6

[ Description ]Official description

Insufficient data validation in Mojo in Google Chrome prior to 105.0.5195.102 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.

CISA: Google Chromium Mojo contains an insufficient data validation vulnerability that allows a remote attacker, who has compromised the renderer process, to potentially perform a sandbox escape 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 29 Sep 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

• chromereleases.googleblog.com/2022/09/stable-channel-update-for-desktop.htmlRelease NotesVendor Advisory
• crbug.com/1358134Permissions Required
• lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/messag…Third Party Advisory
• security.gentoo.org/glsa/202209-23Third Party Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource