CVE-2021-30533: Google Chromium Security Bypass Vulnerability
First published: Wed Nov 04 2020(Updated: )
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.
Credit: chrome-cve-admin@google.com Eliya Stein chrome-cve-admin@google.com chrome-cve-admin@google.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Google Chrome | <91.0.4472.77 | |
| Fedoraproject Fedora | =33 | |
| Fedoraproject Fedora | =34 | |
| Google Chrome | <91.0.4472.77 | 91.0.4472.77 |
| Google Chromium PopupBlocker | ||
| <91.0.4472.77 | ||
| =33 | ||
| =34 |
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Reference Links
- https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop_25.html (Advisory)
- https://crbug.com/1145553
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/
- https://security.gentoo.org/glsa/202107-06
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ETMZL6IHCTCTREEL434BQ4THQ7EOHJ43/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PAT6EOXVQFE6JFMFQF4IKAOUQSHMHL54/
- https://nvd.nist.gov/vuln/detail/CVE-2021-30533
Peer vulnerabilities
(Found alongside the following vulnerabilities)
- CVE-2021-30521
- CVE-2021-30522
- CVE-2021-30523
- CVE-2021-30524
- CVE-2021-30525
- CVE-2021-30526
- CVE-2021-30527
- CVE-2021-30528
- CVE-2021-4322
- CVE-2021-30529
- CVE-2021-30530
- CVE-2021-30531
- CVE-2021-30532
- CVE-2021-30534
- CVE-2021-30535
- CVE-2021-30542
- CVE-2021-30543
- CVE-2021-30558
- CVE-2021-30536
- CVE-2021-30537
- CVE-2021-30538
- CVE-2021-30539
- CVE-2021-30540
- CVE-2021-4321
Frequently Asked Questions
What is CVE-2021-30533?
CVE-2021-30533 is a security bypass vulnerability affecting Google Chromium.
What is the severity of CVE-2021-30533?
CVE-2021-30533 has a severity level of 6.5 (Medium).
Which software is affected by CVE-2021-30533?
CVE-2021-30533 affects web browsers using Chromium, such as Google Chrome and Microsoft Edge.
How can an attacker exploit CVE-2021-30533?
CVE-2021-30533 allows an attacker to remotely bypass security mechanisms in the PopupBlocker for Chromium.
Is there a fix available for CVE-2021-30533?
Yes, a patch for CVE-2021-30533 has been released. It is recommended to update your affected software to the latest version.
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