Privilege escalation in HPE Superdome Flex, Superdome Flex 280 and Compute Scale-up Server 3200 servers

1) Out-of-bounds write

EUVDB-ID: #VU75395

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-38578

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error in MdeModulePkg/Core/PiSmmCore/PiSmmCore.c. A local user trigger an out-of-bounds write and execute arbitrary code with elevated privileges.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Compute Scale-up Server 3200: before 1.20.128

HPE Superdome Flex Server: before 3.90.18

Superdome Flex 280 Server: before 1.70.14

External links

http://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=hpesbhf04633en_us

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.