Remote code execution in Windows Host Compute Service Shim (hcsshim) library

1) Buffer overflow

EUVDB-ID: #VU12364

Risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-8115

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to boundary error within Windows Host Compute Service Shim (hcsshim) library when importing a container image. A remote unauthenticated attacker can place malicious code in a specially crafted container image which, if an authenticated administrator imported (pulled), could cause a container management service utilizing the Host Compute Service Shim library to execute malicious code on the Windows host.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update to version 0.6.10.

Vulnerable software versions

Windows Host Compute Service Shim: 0.1.0 - 0.6.9

CPE2.3

• cpe:2.3:a:microsoft:windows_host_compute_service_shim:0.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:windows_host_compute_service_shim:0.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:microsoft:windows_host_compute_service_shim:0.2.1:*:*:*:*:*:*:*

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8115

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.