CVE-2021-37976 Google Chromium: login or permission bypass
In plain words: A door that should be locked is not: part of the system can be reached without a valid login or permission. The attacker gets in as a user or administrator without knowing a password.
Confirmed exploited by CISA on · US federal patch deadline Nov 17, 2021
What to do
- Install Google's security update for Chromium. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Let the browser auto-update and relaunch it when it asks — the fix is not active until you do.
- Keep extensions to a minimum and remove ones you do not recognise.
- Stop using Internet Explorer and any browser that no longer gets updates.
Who is affected
Could reach you. This one is aimed at devices or apps of the kind people own.
What's at risk: A malicious or hacked website can be enough. Browser bugs are often the first step in a longer attack on the whole computer or phone.
The details
- Official name
- Google Chromium Information Disclosure Vulnerability
- Product
- Google Chromium
- CISA description
- Google Chromium contains an information disclosure vulnerability within the core memory component that allows a remote attacker to obtain potentially sensitive information from process memory 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.
- Type of flaw
- Login or permission bypass (CWE-862)
- Confirmed exploited
- Nov 3, 2021
- US federal patch deadline
- Nov 17, 2021
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Answering about CVE-2021-37976 ·
Questions about CVE-2021-37976
Is CVE-2021-37976 being exploited?
Yes. CISA added CVE-2021-37976 to its Known Exploited Vulnerabilities catalog on Nov 3, 2021, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2021-37976?
Install Google's security update for Chromium. If no update exists, follow the vendor's workaround or stop using the product until one ships. Let the browser auto-update and relaunch it when it asks — the fix is not active until you do.
Am I affected by CVE-2021-37976?
Only if you use Google Chromium. This one is aimed at devices or apps of the kind people own.