Remote code execution in EDK2

1) Out-of-bounds write

EUVDB-ID: #VU95175

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-0160

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error when processing untrusted input. A remote attacker can send specially crafted input to the application, trigger an out-of-bounds write and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

edk2: edk2-stable201808 - UDK2018

CPE2.3

• cpe:2.3:h:tianocore:edk2:edk2-stable201808:*:*:*:*:*:*:*
• cpe:2.3:h:tianocore:edk2:UDK2017:*:*:*:*:*:*:*
• cpe:2.3:h:tianocore:edk2:UDK2018:*:*:*:*:*:*:*

External links

https://tianocore-docs.github.io/SecurityAdvisory/draft/partitiondxe-and-udf-buffer-overflow.html

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.