Privilege escalation in EDK2

1) Buffer overflow

EUVDB-ID: #VU75396

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2014-8271

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within the Reclaim() function. A local user can trigger memory corruption and execute arbitrary code with escalated privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

edk2: All versions

CPE2.3

• cpe:2.3:h:tianocore:edk2:*:*:*:*:*:*:*:*

External links

https://sourceforge.net/p/edk2/code/16280/
https://www.kb.cert.org/vuls/id/533140

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.