Vulnerability CVE-2021-21036

Vulnerability Name:

CVE-2021-21036 (CCN-196201)

Assigned:

2020-12-18

Published:

2021-02-09

Updated:

2021-09-08

Summary:

Acrobat Reader DC versions versions 2020.013.20074 (and earlier), 2020.001.30018 (and earlier) and 2017.011.30188 (and earlier) are affected by an Integer Overflow 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 Severity:

7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
6.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

7.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
6.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

CVSS v2 Severity:

6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Medium Authentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): Partial Availibility (A): Partial

6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

Vulnerability Type:

CWE-190

Vulnerability Consequences:

Gain Access

References:

Source: MITRE
Type: CNA
CVE-2021-21036

Source: XF
Type: UNKNOWN
adobe-reader-cve202121036-overflow(196201)

Source: CCN
Type: Adobe Security Bulletin APSB21-09
Security bulletin for Adobe Acrobat and Reader

Source: MISC
Type: Vendor Advisory
https://helpx.adobe.com/security/products/acrobat/apsb21-09.html

Vulnerable Configuration:

Configuration 1:

cpe:/a:adobe:acrobat:*:*:*:*:classic:*:*:* (Version >= 17.0 and <= 17.011.30188)

OR cpe:/a:adobe:acrobat:*:*:*:*:classic:*:*:* (Version >= 20.0 and <= 20.001.30018)

OR cpe:/a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:* (Version <= 20.013.20074)

OR cpe:/a:adobe:acrobat_reader:*:*:*:*:classic:*:*:* (Version >= 17.0 and <= 17.011.30188)

OR cpe:/a:adobe:acrobat_reader:*:*:*:*:classic:*:*:* (Version >= 20.0 and <= 20.001.300183)

OR cpe:/a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:* (Version <= 20.013.20074)

AND

cpe:/o:apple:macos:-:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows:-:*:*:*:*:*:*:*

Denotes that component is vulnerable

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