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CVE-2021-21186 (GCVE-0-2021-21186)

Vulnerability from cvelistv5 – Published: 2021-03-09 17:46 – Updated: 2024-08-03 18:01
VLAI
Summary
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.
CWE
  • Insufficient policy enforcement
References
URL Tags
https://chromereleases.googleblog.com/2021/03/sta… x_refsource_MISC
https://crbug.com/1153445 x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://www.debian.org/security/2021/dsa-4886 vendor-advisoryx_refsource_DEBIAN
https://security.gentoo.org/glsa/202104-08 vendor-advisoryx_refsource_GENTOO
Impacted products
Vendor Product Version CPE status
Google Chrome Affected: unspecified , < 89.0.4389.72 (custom)
guessed Create a notification for this product.
Show details on NVD website

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        "published": "2021-03-09T18:15:17.687",
        "references": [
          {
            "source": "chrome-cve-admin@google.com",
            "tags": [
              "Release Notes",
              "Vendor Advisory"
            ],
            "url": "https://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop.html"
          },
          {
            "source": "chrome-cve-admin@google.com",
            "tags": [
              "Permissions Required"
            ],
            "url": "https://crbug.com/1153445"
          },
          {
            "source": "chrome-cve-admin@google.com",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BBT54RKAE5XLMWSHLVUKJ7T2XHHYMXLH/"
          },
          {
            "source": "chrome-cve-admin@google.com",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FE5SIKEVYTMDCC5OSXGOM2KRPYLHYMQX/"
          },
          {
            "source": "chrome-cve-admin@google.com",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LCIDZ77XUDMB2EBPPWCQXPEIJERDNSNT/"
          },
          {
            "source": "chrome-cve-admin@google.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://security.gentoo.org/glsa/202104-08"
          },
          {
            "source": "chrome-cve-admin@google.com",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.debian.org/security/2021/dsa-4886"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Release Notes",
              "Vendor Advisory"
            ],
            "url": "https://chromereleases.googleblog.com/2021/03/stable-channel-update-for-desktop.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Permissions Required"
            ],
            "url": "https://crbug.com/1153445"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BBT54RKAE5XLMWSHLVUKJ7T2XHHYMXLH/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FE5SIKEVYTMDCC5OSXGOM2KRPYLHYMQX/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LCIDZ77XUDMB2EBPPWCQXPEIJERDNSNT/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://security.gentoo.org/glsa/202104-08"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://www.debian.org/security/2021/dsa-4886"
          }
        ],
        "sourceIdentifier": "chrome-cve-admin@google.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-863"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2025-11-21T16:20:25+00:00",
      "cve": "CVE-2021-21186",
      "id": "CVE-2021-21186",
      "initial_release_date": "2021-03-02T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "chromium-browser: Insufficient policy enforcement in QR scanning",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-21186.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2025-03-15T09:12:35Z",
      "cve": "CVE-2021-21186",
      "id": "CVE-2021-21186",
      "initial_release_date": "2023-02-15T03:46:41Z",
      "product_status:recommended": "10",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-21186",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-21186.json",
      "version": "6"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Detection rules are retrieved from Rulezet.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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