SB2020062520 - Multiple vulnerabilities in VMware ESXi, Fusion, Workstation and Cloud Foundation
Published: June 25, 2020 Updated: July 1, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Heap-based buffer overflow (CVE-ID: CVE-2020-3967)
The vulnerability allows a local attacker to escalate privileges on the system.
The vulnerability exists due to a boundary error in EHCI controller. A local attacker can pass specially crafted data to the application, trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
2) Out-of-bounds write (CVE-ID: CVE-2020-3968)
The vulnerability allows a local attacker to escalate privileges on the system.
The vulnerability exists due to a boundary error when processing untrusted input in xHCI controller. A local attacker can trigger out-of-bounds write and execute arbitrary code on the target system.
3) Out-of-bounds read (CVE-ID: CVE-2020-3970)
The vulnerability allows a local attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition in the Shader functionality. A local attacker can trigger out-of-bounds read error and cause a denial of service condition on the system.
4) Off-by-one (CVE-ID: CVE-2020-3969)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to an off-by-one error in SVGA device when processing SVGA3D commands. A local attacker can trigger an off-by-one error and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
5) Use-after-free (CVE-ID: CVE-2020-3962)
The vulnerability allows a local attacker to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in the SVGA device when processing SVGA DXInvalidateContext command. A local attacker can execute arbitrary code on the hypervisor from a virtual machine.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Remediation
Install update from vendor's website.
References
- https://exchange.xforce.ibmcloud.com/vulnerabilities/183922
- https://www.zerodayinitiative.com/advisories/ZDI-20-784/
- https://www.zerodayinitiative.com/advisories/ZDI-20-781/
- https://www.vmware.com/security/advisories/VMSA-2020-0015.html
- https://www.zerodayinitiative.com/advisories/ZDI-20-782/
- https://www.zerodayinitiative.com/advisories/ZDI-20-786/
- https://www.zerodayinitiative.com/advisories/ZDI-20-785/