#VU53432 Out-of-bounds read in VMware Workstation and VMware Horizon Client


Published: 2021-05-24 | Updated: 2021-05-26

Vulnerability identifier: #VU53432

Vulnerability risk: Low

CVSSv3.1: 3.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21988

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
VMware Workstation
Client/Desktop applications / Virtualization software
VMware Horizon Client
Client/Desktop applications / Software for system administration

Vendor: VMware, Inc

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in the Cortado ThinPrint component within the JPEG2000 parser. A remote attacker can trigger out-of-bounds read error and read contents of memory on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

VMware Workstation: 16.0 - 16.1.1

VMware Horizon Client: 5.0 - 5.5.1


External links
http://www.vmware.com/security/advisories/VMSA-2021-0009.html
http://www.zerodayinitiative.com/advisories/ZDI-21-609/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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


Latest bulletins with this vulnerability