Multiple vulnerabilities in EDK2



| Updated: 2024-02-16
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2023-45236
CVE-2023-45237
CWE-ID CWE-338
Exploitation vector Network
Public exploit N/A
Vulnerable software
 edk2
Hardware solutions / Firmware

Vendor TianoCore

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

EUVDB-ID: #VU85527

Risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-45236

CWE-ID: CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a predictable TCP Initial Sequence Number. A remote attacker on the local network can gain unauthorized access to sensitive information on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

edk2: edk2-stable201808 - edk2-stable202311

CPE2.3 External links

https://github.com/tianocore/edk2/security/advisories/GHSA-hc6x-cw6p-gj7h
https://www.openwall.com/lists/oss-security/2024/01/16/2


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

EUVDB-ID: #VU85528

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-45237

CWE-ID: CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a predictable TCP Initial Sequence Number. A remote attacker can gain unauthorized access to sensitive information on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

edk2: edk2-stable201808 - edk2-stable202311

CPE2.3 External links

https://github.com/tianocore/edk2/security/advisories/GHSA-hc6x-cw6p-gj7h
https://www.openwall.com/lists/oss-security/2024/01/16/2


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.



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