certfr_alerte - certfr-2021-ale-010

CERTFR-2021-ALE-010

Vulnerability from certfr_alerte

Une vulnérabilité a été découverte dans Adobe Acrobat et Acrobat Reader. Elle permet à un attaquant de provoquer une exécution de code arbitraire. L'éditeur indique que cette vulnérabilité aurait été exploitée dans des attaques ciblées visant des utilisateurs d'Acrobat Reader sur Windows.

Solution

Le CERT-FR recommande de déployer le correctif de sécurité dans les plus brefs délais.

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

	Vendor	Product	Description

References

Title

Publication Time

Tags

Avis de sécurité CERT-FR CERTFR-2021-AVI-360 du 12 mai 2021	None	vendor-advisory
Bulletin de sécurité Adobe apsb21-29 du 11 mai 2021	None	vendor-advisory

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JSON

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{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [],
  "affected_systems_content": "",
  "closed_at": "2021-06-29",
  "content": "## Solution\n\n**Le CERT-FR recommande de d\u00e9ployer le correctif de s\u00e9curit\u00e9 dans les\nplus brefs d\u00e9lais.**\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des\ncorrectifs (cf. section Documentation).\n",
  "cves": [
    {
      "name": "CVE-2021-28550",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-28550"
    }
  ],
  "initial_release_date": "2021-05-12T00:00:00",
  "last_revision_date": "2021-06-29T00:00:00",
  "links": [],
  "reference": "CERTFR-2021-ALE-010",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2021-05-12T00:00:00.000000"
    },
    {
      "description": "Cl\u00f4ture de l\u0027alerte. Cela ne signifie pas la fin d\u0027une menace. Seule l\u0027application de la mise \u00e0 jour permet de vous pr\u00e9munir contre l\u0027exploitation de la vuln\u00e9rabilit\u00e9 correspondante.",
      "revision_date": "2021-06-29T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Ex\u00e9cution de code arbitraire"
    }
  ],
  "summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans Adobe Acrobat et Acrobat Reader.\nElle permet \u00e0 un attaquant de provoquer une ex\u00e9cution de code\narbitraire. L\u0027\u00e9diteur indique que cette vuln\u00e9rabilit\u00e9 aurait \u00e9t\u00e9\nexploit\u00e9e dans des attaques cibl\u00e9es visant des utilisateurs d\u0027Acrobat\nReader sur Windows.\n",
  "title": "Vuln\u00e9rabilit\u00e9 dans Adobe Acrobat et Acrobat Reader",
  "vendor_advisories": [
    {
      "published_at": null,
      "title": "Avis de s\u00e9curit\u00e9 CERT-FR CERTFR-2021-AVI-360 du 12 mai 2021",
      "url": "https://www.cert.ssi.gouv.fr/avis/CERTFR-2021-AVI-360"
    },
    {
      "published_at": null,
      "title": "Bulletin de s\u00e9curit\u00e9 Adobe apsb21-29 du 11 mai 2021",
      "url": "https://helpx.adobe.com/security/products/acrobat/apsb21-29.html"
    }
  ]
}

CVE-2021-28550 (GCVE-0-2021-28550)

Vulnerability from cvelistv5

Published

2021-09-02 16:07

Modified

2025-10-21 23:25

Severity ?

9.6 (Critical) - CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

CWE

CWE-416 - Use After Free ()

Summary

Acrobat Reader DC versions versions 2021.001.20150 (and earlier), 2020.001.30020 (and earlier) and 2017.011.30194 (and earlier) are affected by a Use After Free vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

References

URL

Tags

https://helpx.adobe.com/security/products/acrobat/apsb21-29.html

Impacted products

	Vendor	Product	Version
	Adobe	Acrobat Reader	Version: unspecified < Version: unspecified < Version: unspecified < Version: unspecified <

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T21:47:32.615Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://helpx.adobe.com/security/products/acrobat/apsb21-29.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-28550",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-02-04T18:17:32.968582Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2021-11-03",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-28550"
              },
              "type": "kev"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-21T23:25:35.586Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "government-resource"
            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-28550"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2021-11-03T00:00:00+00:00",
            "value": "CVE-2021-28550 added to CISA KEV"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Acrobat Reader",
          "vendor": "Adobe",
          "versions": [
            {
              "lessThanOrEqual": "2020.001.30020",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "2021.001.20150",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "2017.011.30194",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "None",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "datePublic": "2021-05-11T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Acrobat Reader DC versions versions 2021.001.20150 (and earlier), 2020.001.30020 (and earlier) and 2017.011.30194 (and earlier) are affected by a Use After Free vulnerability. An unauthenticated attacker could leverage this vulnerability to achieve arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.6,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-416",
              "description": "Use After Free (CWE-416)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-03-28T00:00:00.000Z",
        "orgId": "078d4453-3bcd-4900-85e6-15281da43538",
        "shortName": "adobe"
      },
      "references": [
        {
          "url": "https://helpx.adobe.com/security/products/acrobat/apsb21-29.html"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Adobe Acrobat Reader use after free vulnerability could lead to arbitrary code execution"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "078d4453-3bcd-4900-85e6-15281da43538",
    "assignerShortName": "adobe",
    "cveId": "CVE-2021-28550",
    "datePublished": "2021-09-02T16:07:20.687Z",
    "dateReserved": "2021-03-16T00:00:00.000Z",
    "dateUpdated": "2025-10-21T23:25:35.586Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

CERTFR-2021-ALE-010

Vulnerability from certfr_alerte

Solution

CVE-2021-28550 (GCVE-0-2021-28550)

Vulnerability from cvelistv5

Tags

Sightings

Nomenclature