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CVE-2018-15981: Adobe Flash Player: Memory corruption

CVE-2018-15981 is rated critical with a CVSS v3.0 base score of 9.8 and affects Adobe Flash Player, along with 4 other products in NVD’s configuration data. 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

Flash Player versions 31.0.0.148 and earlier have a type confusion vulnerability. Successful exploitation could lead to arbitrary code execution.

Severity breakdown

CVSS v3.0 9.8: CVSS:3.0/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-704: Incorrect Type Conversion or Cast

The product does not correctly convert an object, resource, or structure from one type to a different type.

Affected products

• Adobe Flash Player: up to and including 31.0.0.148
• Adobe Flash Player Desktop Runtime: up to and including 31.0.0.148
• Red Hat Enterprise Linux Desktop: 6.0
• Red Hat Enterprise Linux Server: 6.0
• Red Hat Enterprise Linux Workstation: 6.0

References

• https://helpx.adobe.com/security/products/flash-player/apsb18-44.html
• http://www.securityfocus.com/bid/105964
• http://www.securitytracker.com/id/1042151
• https://access.redhat.com/errata/RHSA-2018:3644