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CVE-2018-4917: Adobe Acrobat and Reader versions 2018.009.20050 and earlier, 2017.011.30070 and earlier, 2015.006.30394 and…

CVE-2018-4917 is rated critical with a CVSS v3.1 base score of 9.8 and NVD lists 4 affected products, including Adobe Acrobat 2017. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

Adobe Acrobat and Reader versions 2018.009.20050 and earlier, 2017.011.30070 and earlier, 2015.006.30394 and earlier have an exploitable heap overflow vulnerability. Successful exploitation could lead to arbitrary code execution in the context of the current user.

Severity breakdown

CVSS v3.1 9.8: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
Attack complexity: Low. No special conditions; the attack can be repeated reliably.
Privileges required: None. No account or prior access is needed.
User interaction: None. No action from any user is needed.
Scope: Unchanged. Impact stays within the vulnerable component.
Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-787: Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

Affected products

Adobe Acrobat 2017: from 17.011.30070 before 17.011.30078
Adobe Acrobat Dc: from 15.006.30394 before 15.006.30413; from 18.009.20050 before 18.011.20035
Adobe Acrobat Reader 2017: from 17.011.30070 before 17.011.30078
Adobe Acrobat Reader Dc: from 15.006.30394 before 15.006.30413; from 18.009.20050 before 18.011.20035