CVE-2021-30633: Google Chromium Indexed DB API Use-After-Free Vulnerability
CVE-2021-30633 · Severity: critical · CVSS 9.6 · Exploited in the wild · Published 2021-11-03
A use-after-free vulnerability exists in the Indexed DB API of Google Chromium. A remote attacker who has already compromised the renderer process can exploit this flaw via a crafted HTML page to perform a sandbox escape.
Yes. CVE-2021-30633 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2021-30633?
Critical severity, with a CVSS score of 9.6, published 3 November 2021.
Which products and versions are affected?
Google Chrome prior to 93.0.4577.82; Microsoft Edge; Opera Software Opera.
Is there a fix for CVE-2021-30633?
A patch was published on 2021-09-13: Chrome version 93.0.4577.82 released to address the vulnerability. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2021-30633 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2021-30633?
Check whether you run Google Chromium Indexed Db Api. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Affected products
Google Chrome prior to 93.0.4577.82
Microsoft Edge
Opera Software Opera
Timeline
2021-09-13: patched: Chrome version 93.0.4577.82 released to address the vulnerability.
2021-11-03: disclosed: Vulnerability published and added to CISA KEV catalog.
2021-11-03: kev added
2021-11-03: exploited: Reported as exploited in the wild.