Insufficient policy validation in extensions in Google Chrome prior to 85.0.4183.121 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-15961
• https://chromereleases.googleblog.com/2020/09/stable-channel-update-for-desktop_21.html
• https://crbug.com/1114636
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FN7HZIGAOCZKBT4LV363BCPRA5FLY25I/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GNIYFJST4TFJYFZ27VODBOINCLBGULTD/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YWNBJFBPKYCYSZTS54FHNCRZG6KC2AIJ/
• https://security.gentoo.org/glsa/202009-13
• https://security.gentoo.org/glsa/202101-30
• https://www.debian.org/security/2021/dsa-4824
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00087.html
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00095.html
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00096.html
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00049.html