Google Chromium PopupBlocker Security Bypass Vulnerability (CVE-2021-30533)
Severity: medium · Patch status: patched · Since 2022-06-27 · CVE-2021-30533
Google Chromium PopupBlocker contains an insufficient policy enforcement vulnerability that allows a remote attacker to bypass navigation restrictions via a crafted iframe. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera. CISA added CVE-2021-30533 to its Known Exploited Vulnerabilities catalog on Jun 27, 2022, which means attackers are exploiting it in the wild.
What to do
- Apply updates per vendor instructions.
- US federal agencies must remediate by Jul 18, 2022 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch