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CVE-2017-8773: Quickheal Antivirus Pro: Privilege escalation
CVE-2017-8773 is rated critical with a CVSS v3.1 base score of 9.8 and affects Quickheal Antivirus Pro. 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
Quick Heal Internet Security 10.1.0.316, Quick Heal Total Security 10.1.0.316, and Quick Heal AntiVirus Pro 10.1.0.316 are vulnerable to Out of Bounds Write on a Heap Buffer due to improper validation of dwCompressionSize of Microsoft WIM Header WIMHEADER_V1_PACKED. This vulnerability can be exploited to gain Remote Code Execution as well as Privilege Escalation.
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
- Quickheal Antivirus Pro: up to and including 10.1.0.316
- Quickheal Internet Security: up to and including 10.1.0.316
- Quickheal Total Security: up to and including 10.1.0.316