#VU54482 Inadequate Encryption Strength in edk2 - CVE-2021-28213

Vulnerability identifier: #VU54482

Vulnerability risk: Low

CVSSv4.0: 0.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-28213

CWE-ID: CWE-326

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
edk2
Hardware solutions / Firmware

Vendor: TianoCore

Description

The vulnerability allows an attacker to gain access to sensitive information.

The vulnerability exists due to presence of an encrypted example private key in the IpSecDxe.efi. An attacker can decrypt the private key and gain unauthorized access to the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

edk2: edk2-stable201808 - UDK2018

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External links
https://bugzilla.tianocore.org/show_bug.cgi?id=1866

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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.