CVE-2023-45236: edk2 Information Disclosure — Fix

Description

EDK2's Network Package is susceptible to a predictable TCP Initial Sequence Number. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality.

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CVSS v3.1 Score

5.8

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

Weakness Type (CWE)

CWE-200 CWE-200

CWE-338 CWE-338

Affected Products

Vendor	Product	Versions
tianocore	edk2	< 202311

References

Advisories & Patches

https://github.com/tianocore/edk2/security/advisories/GHSA-hc6x-cw6p-gj7h https://github.com/tianocore/edk2/security/advisories/GHSA-hc6x-cw6p-gj7h

Other References

http://www.openwall.com/lists/oss-security/2024/01/16/2 https://security.netapp.com/advisory/ntap-20240307-0011/ http://www.openwall.com/lists/oss-security/2024/01/16/2 https://security.netapp.com/advisory/ntap-20240307-0011/ https://www.kb.cert.org/vuls/id/132380

Frequently Asked Questions

What is CVE-2023-45236? +

EDK2's Network Package is susceptible to a predictable TCP Initial Sequence Number. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality. It has a CVSS v3.1 base score of 5.8 (MEDIUM).

How severe is CVE-2023-45236? +

CVE-2023-45236 has a CVSS v3.1 score of 5.8 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-45236? +

CVE-2023-45236 affects products from tianocore, specifically: edk2. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-45236? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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