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CVE-2017-13696: Flexense Dupscout: Buffer overflow

CVE-2017-13696 is rated critical with a CVSS v3.0 base score of 9.8 and affects Flexense Dupscout. 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

A buffer overflow vulnerability lies in the web server component of Dup Scout Enterprise 9.9.14, Disk Savvy Enterprise 9.9.14, Sync Breeze Enterprise 9.9.16, and Disk Pulse Enterprise 9.9.16 where an attacker can craft a malicious GET request and exploit the web server component. Successful exploitation of the software will allow an attacker to gain complete access to the system with NT AUTHORITY / SYSTEM level privileges. The vulnerability lies due to improper handling and sanitization of the incoming request.

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-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary.

Affected products

• Flexense Dupscout: 9.9.14
• Flexense Disksavvy: 9.9.14
• Flexense Syncbreeze: 9.9.16
• Flexense Diskpulse: 9.9.16

References

• https://www.exploit-db.com/exploits/42557
• https://www.exploit-db.com/exploits/42558/
• https://www.exploit-db.com/exploits/42559/
• https://www.exploit-db.com/exploits/42560/
• https://www.rapid7.com/db/modules/exploit/windows/http/disk_pulse_enterprise_get