Is CVE-2020-17392 in the CISA KEV catalog?

No. CVE-2020-17392 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-17392?

CVE-2020-17392 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2020-17392?

CVE-2020-17392 has an EPSS score of 0.53% (41th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-17392?

Upgrade parallels desktop to 16.0.0 or later.

CVE & CISA-KEV Catalog

CVE-2020-17392

HIGH

8.8

CVSS v3

NVD

Description

This vulnerability allows local attackers to escalate privileges on affected installations of Parallels Desktop 15.1.3-47255. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handler for HOST_IOCTL_SET_KERNEL_SYMBOLS in the prl_hypervisor kext. The issue results from the lack of proper validation of a user-supplied value prior to dereferencing it as a pointer. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the kernel. Was ZDI-CAN-10519.

CWE-822Untrusted Pointer Dereference

How to fix

Remediation Available

parallels desktopNVD

Affected:< 16.0.0Fixed in:16.0.0CVE-2020-17392derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Exploit Intelligence

0.53%probability of exploitation in 30 days

41stpercentile

Moderate risk: more likely to be exploited than 41% of all known CVEs.

References

Vendor Advisory1

kb.parallels.com

Third-Party Advisory1

zerodayinitiative.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.