CVE-2021-21186
MEDIUMCVSS 4.3/10EPSS 1.13%
Last modified
CVE-2021-21186 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Insufficient policy enforcement in QR scanning in Google Chrome on iOS prior to 89.0.4389.72 allowed an attacker who convinced the user to scan a QR code to bypass navigation restrictions via a crafted QR code.. EPSS estimates a 1.13% chance of exploitation in the next 30 days.
Description
Insufficient policy enforcement in QR scanning in Google Chrome on iOS prior to 89.0.4389.72 allowed an attacker who convinced the user to scan a QR code to bypass navigation restrictions via a crafted QR code.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Chrome | < 89.0.4389.72 | |
| Fedoraproject | Fedora | 32 |
| Fedoraproject | Fedora | 33 |
| Fedoraproject | Fedora | 34 |
| Debian | Debian Linux | 10.0 |
References
- https://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop.htmlRelease Notes, Vendor Advisory
- https://crbug.com/1153445Permissions Required
- https://security.gentoo.org/glsa/202104-08Third Party Advisory
- https://www.debian.org/security/2021/dsa-4886Third Party Advisory
- https://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop.htmlRelease Notes, Vendor Advisory
- https://crbug.com/1153445Permissions Required
- https://security.gentoo.org/glsa/202104-08Third Party Advisory
- https://www.debian.org/security/2021/dsa-4886Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-21186?
Insufficient policy enforcement in QR scanning in Google Chrome on iOS prior to 89.0.4389.72 allowed an attacker who convinced the user to scan a QR code to bypass navigation restrictions via a crafted QR code.
How severe is CVE-2021-21186?
CVE-2021-21186 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 1.13% probability of exploitation in the next 30 days.
How do I fix CVE-2021-21186?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-21180Use after free in tab search in Google Chrome prior to 89.0.…8.8
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- CVE-2021-21182Insufficient policy enforcement in navigations in Google Chr…6.5
- CVE-2021-21183Inappropriate implementation in performance APIs in Google C…4.3
- CVE-2021-21184Inappropriate implementation in performance APIs in Google C…4.3
- CVE-2021-21185Insufficient policy enforcement in extensions in Google Chro…4.3
- CVE-2021-21187Insufficient data validation in URL formatting in Google Chr…4.3
- CVE-2021-21188Use after free in Blink in Google Chrome prior to 89.0.4389.…8.8
- CVE-2021-21189Insufficient policy enforcement in payments in Google Chrome…4.3
- CVE-2021-2119Vulnerability in the Oracle VM VirtualBox product of Oracle …6
- CVE-2021-21190Uninitialized data in PDFium in Google Chrome prior to 89.0.…8.8
- CVE-2021-21191Use after free in WebRTC in Google Chrome prior to 89.0.4389…8.8
Are you affected by CVE-2021-21186?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST