#VU45770 Out-of-bounds read in Parallels Desktop - CVE-2020-17397

Vulnerability identifier: #VU45770

Vulnerability risk: Low

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-17397

CWE-ID: CWE-125

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Parallels Desktop
Operating systems & Components / Operating system package or component

Vendor: Parallels

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary condition within the handling of network packets. A local user can run a specially crafted application to trigger out-of-bounds read error and  in the context of the hypervisor.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Parallels Desktop: 15.0.0 (46967) - 15.1.4 (47270)

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External links
https://www.zerodayinitiative.com/advisories/ZDI-20-1015/
https://kb.parallels.com/en/125013

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.