CVE-2021-21057

Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by a null pointer dereference vulnerability when parsing a specially crafted PDF file. An unauthenticated attacker could leverage this vulnerability to achieve denial of service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.

CVSS v3 6.6 MEDIUM
CVSS v2.0 4.3 MEDIUM

6.6^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 4.7

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

4.3^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:N/I:N/A:P

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://helpx.adobe.com/security/products/acrobat/apsb21-09.html	Vendor Advisory
https://helpx.adobe.com/security/products/acrobat/apsb21-09.html	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

OR	cpe:2.3:a:adobe:acrobat:::::classic:::*
	cpe:2.3:a:adobe:acrobat:::::classic:::*
	cpe:2.3:a:adobe:acrobat_dc:::::continuous:::*
	cpe:2.3:a:adobe:acrobat_reader:::::classic:::*
	cpe:2.3:a:adobe:acrobat_reader:::::classic:::*
	cpe:2.3:a:adobe:acrobat_reader_dc:::::continuous:::*

OR	cpe:2.3:o:apple:macos:-:::::::*
	cpe:2.3:o:microsoft:windows:-:::::::*

History

21 Nov 2024, 05:47

Type	Values Removed	Values Added
References	~~() https://helpx.adobe.com/security/products/acrobat/apsb21-09.html - Vendor Advisory~~	() https://helpx.adobe.com/security/products/acrobat/apsb21-09.html - Vendor Advisory

Information

Published : 2021-02-11 20:15

Updated : 2024-11-21 05:47

NVD link : CVE-2021-21057

Mitre link : CVE-2021-21057

CVE.ORG link : CVE-2021-21057

JSON object : View

Products Affected

adobe

acrobat_reader
acrobat_reader_dc
acrobat_dc
acrobat

microsoft

windows

apple

macos

CWE

CWE-476

NULL Pointer Dereference

{"id": "CVE-2021-21057", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 4.3, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Secondary", "source": "psirt@adobe.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.6, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 4.7, "exploitabilityScore": 1.8}]}, "published": "2021-02-11T20:15:15.873", "references": [{"url": "https://helpx.adobe.com/security/products/acrobat/apsb21-09.html", "tags": ["Vendor Advisory"], "source": "psirt@adobe.com"}, {"url": "https://helpx.adobe.com/security/products/acrobat/apsb21-09.html", "tags": ["Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "psirt@adobe.com", "description": [{"lang": "en", "value": "CWE-476"}]}], "descriptions": [{"lang": "en", "value": "Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by a null pointer dereference vulnerability when parsing a specially crafted PDF file. An unauthenticated attacker could leverage this vulnerability to achieve denial of service in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file."}, {"lang": "es", "value": "Acrobat Reader DC versiones 2020.013.20074 (y anteriores), versiones 2020.001.30018 (y anteriores) y versiones 2017.011.30188 (y anteriores), est\u00e1n afectadas por una vulnerabilidad de desreferencia del puntero null cuando analiza un archivo PDF especialmente dise\u00f1ado. Un atacante no autenticado podr\u00eda aprovechar esta vulnerabilidad para lograr la denegaci\u00f3n de servicio en el contexto del usuario actual. Una explotaci\u00f3n de este problema requiere una interacci\u00f3n del usuario, ya que la v\u00edctima debe abrir un archivo malicioso"}], "lastModified": "2024-11-21T05:47:29.020", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*", "vulnerable": true, "matchCriteriaId": "CC23AA00-FC0B-4CA7-83CF-D11CB679630C", "versionEndIncluding": "17.011.30188", "versionStartIncluding": "17.0"}, {"criteria": "cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*", "vulnerable": true, "matchCriteriaId": "2B0D84BC-88D8-4B29-BF4C-DE3D27D0EFF3", "versionEndIncluding": "20.001.30018", "versionStartIncluding": "20.0"}, {"criteria": "cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*", "vulnerable": true, "matchCriteriaId": "BAA2B3BC-EA31-445B-9D6F-1A3D86030F98", "versionEndIncluding": "20.013.20074"}, {"criteria": "cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:*", "vulnerable": true, "matchCriteriaId": "33305687-D4B1-4A48-B6B3-0619038243BF", "versionEndIncluding": "17.011.30188", "versionStartIncluding": "17.0"}, {"criteria": "cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:*", "vulnerable": true, "matchCriteriaId": "4B989379-B8B7-4FA7-9319-F0FB8CA2253C", "versionEndIncluding": "20.001.300183", "versionStartIncluding": "20.0"}, {"criteria": "cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*", "vulnerable": true, "matchCriteriaId": "E5BC145F-0696-4B2F-AEC5-4FDB25E8EA6E", "versionEndIncluding": "20.013.20074"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"}, {"criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "psirt@adobe.com"}