What is CVE-2020-17397?

CVE-2020-17397 is a high-severity vulnerability in Parallels Desktop, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.2/10. Published 2020-08-25.

How severe is CVE-2020-17397?

High severity. CVSS v3 base score is 8.2 out of 10.

Buffer overflow in Parallels Desktop

CVE-2020-17397

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 15.1.4. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within the handling of network packets. The issue results from the lack of proper validation of user-supplied data, which can result in a memory corruption condition. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the hypervisor. Was ZDI-CAN-11253.

Vulnerability class: Buffer Overflow

EPSS: 0.005 (37.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

Affected products

Parallels Desktop — versions 15.1.4
Parallels Parallels_desktop

Weakness classification (CWE)

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

References

zdi-disclosures@trendmicro.com (x_refsource_MISC, Vendor Advisory)
zdi-disclosures@trendmicro.com (VDB Entry, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-17397?: CVE-2020-17397 is a high-severity vulnerability in Parallels Desktop, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.2/10. Published 2020-08-25.
How severe is CVE-2020-17397?: High severity. CVSS v3 base score is 8.2 out of 10.