CVE-2021-21040

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 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.

CVSS v3.0 7.8 HIGH
CVSS v2.0 6.8 MEDIUM

7.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

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

Advertisement

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:-:::::::*

Information

Published : 2021-02-11 12:15

Updated : 2021-09-08 10:23

NVD link : CVE-2021-21040

Mitre link : CVE-2021-21040

JSON object : View

CWE

CWE-416

Use After Free

Advertisement

Products Affected

microsoft

windows

adobe

acrobat
acrobat_reader_dc
acrobat_reader
acrobat_dc

apple

macos

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "https://helpx.adobe.com/security/products/acrobat/apsb21-09.html", "name": "https://helpx.adobe.com/security/products/acrobat/apsb21-09.html", "tags": ["Vendor Advisory"], "refsource": "MISC"}]}, "data_format": "MITRE", "description": {"description_data": [{"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 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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-416"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2021-21040", "ASSIGNER": "psirt@adobe.com"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 6.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 6.4, "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}}, "publishedDate": "2021-02-11T20:15Z", "configurations": {"nodes": [{"children": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "17.011.30188", "versionStartIncluding": "17.0"}, {"cpe23Uri": "cpe:2.3:a:adobe:acrobat:*:*:*:*:classic:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "20.001.30018", "versionStartIncluding": "20.0"}, {"cpe23Uri": "cpe:2.3:a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "20.013.20074"}, {"cpe23Uri": "cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "17.011.30188", "versionStartIncluding": "17.0"}, {"cpe23Uri": "cpe:2.3:a:adobe:acrobat_reader:*:*:*:*:classic:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "20.001.300183", "versionStartIncluding": "20.0"}, {"cpe23Uri": "cpe:2.3:a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "20.013.20074"}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}, {"cpe23Uri": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": false}]}], "operator": "AND", "cpe_match": []}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2021-09-08T17:23Z"}