CVE-2023-45236: Predictable TCP ISNs in EDK II Network Package
First published: Tue Jan 16 2024(Updated: )
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.
Credit: infosec@edk2.groups.io
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Tianocore EDK II | <=202311 |
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Reference Links
- http://www.openwall.com/lists/oss-security/2024/01/16/2
- https://github.com/tianocore/edk2/security/advisories/GHSA-hc6x-cw6p-gj7h
- https://security.netapp.com/advisory/ntap-20240307-0011/
- https://blog.quarkslab.com/pixiefail-nine-vulnerabilities-in-tianocores-edk-ii-ipv6-network-stack.html
- https://github.com/advisories/GHSA-fqc4-ffq5-4r98
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2258705
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2258704
- https://access.redhat.com/errata/RHSA-2024:4419
- https://access.redhat.com/errata/RHSA-2024:4749
- https://access.redhat.com/errata/RHSA-2024:5297
- https://bugzilla.redhat.com/show_bug.cgi?id=2258703
Frequently Asked Questions
What is the severity of CVE-2023-45236?
CVE-2023-45236 has a high severity rating due to its potential to allow unauthorized access.
How does CVE-2023-45236 exploit predictability in TCP Initial Sequence Numbers?
CVE-2023-45236 exploits predictable TCP Initial Sequence Numbers to enable attackers to hijack network sessions.
What versions of EDK2 are affected by CVE-2023-45236?
CVE-2023-45236 affects EDK2 versions up to and including 202311.
How do I mitigate CVE-2023-45236?
Mitigation for CVE-2023-45236 involves updating EDK2 to the latest version that addresses the vulnerability.
What impact can CVE-2023-45236 have on confidentiality?
CVE-2023-45236 can lead to a loss of confidentiality, allowing attackers to intercept sensitive data.
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