VMWare Horizon Client wswc_sharedMem_shared Out-Of-Bounds Read Information Disclosure Vulnerability
Vulnerability Details
This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of VMware Horizon Client. 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 messages passed to the wswc_sharedMem_shared shared memory. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of SYSTEM.
Additional Details
VMware has issued an update to correct this vulnerability. More details can be found at:
https://www.vmware.com/security/advisories/VMSA-2018-0019.html
Disclosure Timeline
- 2018-04-17 - Vulnerability reported to vendor
- 2018-08-10 - Coordinated public release of advisory
- 2018-08-10 - Advisory Updated
Credit
Steven Seeley (mr_me) of Source Incite
