Vulnerability CVE-2021-35984

Vulnerability Name:

CVE-2021-35984 (CCN-205048)

Assigned:

2021-07-13

Published:

2021-07-13

Updated:

2021-09-01

Summary:

Acrobat Reader DC versions 2021.005.20054 (and earlier), 2020.004.30005 (and earlier) and 2017.011.30197 (and earlier) are affected by a Null pointer dereference vulnerability. An authenticated attacker could leverage this vulnerability achieve an application denial-of-service in the context of the current user. Exploitation of this issue does not requires user interaction.

CVSS v3 Severity:

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

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

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

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

CVSS v2 Severity:

4.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:N/A:P)

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

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

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Complete

Vulnerability Type:

CWE-476

Vulnerability Consequences:

Denial of Service

References:

Source: MITRE
Type: CNA
CVE-2021-35984

Source: XF
Type: UNKNOWN
adobe-reader-cve202135984-dos(205048)

Source: CCN
Type: Adobe Security Bulletin APSB21-51
Security update available for Adobe Acrobat and Reader

Source: MISC
Type: Release Notes, Vendor Advisory
https://helpx.adobe.com/security/products/acrobat/apsb21-51.html

Vulnerable Configuration:

Configuration 1:

cpe:/a:adobe:acrobat_dc:*:*:*:*:continuous:*:*:* (Version >= 15.008.20082 and <= 21.005.20054)

OR cpe:/a:adobe:acrobat_dc:*:*:*:*:classic:*:*:* (Version >= 17.011.30059 and <= 17.011.30197)

OR cpe:/a:adobe:acrobat_dc:*:*:*:*:classic:*:*:* (Version >= 20.001.30005 and <= 20.004.30005)

OR cpe:/a:adobe:acrobat_reader_dc:*:*:*:*:continuous:*:*:* (Version >= 15.008.20082 and <= 21.005.20054)

OR cpe:/a:adobe:acrobat_reader_dc:*:*:*:*:classic:*:*:* (Version >= 17.011.30059 and <= 17.011.30197)

OR cpe:/a:adobe:acrobat_reader_dc:*:*:*:*:classic:*:*:* (Version >= 20.001.30005 and <= 20.004.30005)

Denotes that component is vulnerable

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