CVE-2023-28244
Published: 11 April 2023
Summary
CVE-2023-28244 is a high-severity Use of a Broken or Risky Cryptographic Algorithm (CWE-327) vulnerability in Microsoft Windows Server 2008. Its CVSS base score is 8.1 (High).
Operationally, ranked in the top 9.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2023-28244 is an elevation of privilege vulnerability in the Windows Kerberos implementation. It affects the Kerberos authentication component within supported Windows operating systems and carries a CVSS 3.1 base score of 8.1 with a network attack vector, high attack complexity, and no required privileges or user interaction.
An unauthenticated remote attacker can exploit the flaw over the network to obtain elevated privileges, resulting in full compromise of confidentiality, integrity, and availability on the target system. The associated CWE-327 classification points to use of a broken or risky cryptographic algorithm as the underlying weakness.
Microsoft security advisories at the referenced MSRC update guide URLs describe the availability of patches that address the vulnerability and recommend applying the relevant security updates as the primary mitigation. The EPSS score has remained flat at 0.0603 with no material increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-31952
Vulnerability details
Windows Kerberos Elevation of Privilege Vulnerability
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Contacts with security groups provide timely information on broken or risky cryptographic algorithms, reducing the likelihood of their selection and use.
Ongoing education and sharing of recommended practices helps organizations identify and migrate away from broken or risky cryptographic algorithms.
Cross-organization threat feeds commonly include advances in cryptanalysis and active exploits against weak or broken algorithms, allowing organizations to deprecate them proactively.
Capital planning and funding allow selection and ongoing support of strong cryptographic algorithms rather than weak or broken ones.
Risk updates surface newly-broken or risky cryptographic algorithms as threat intelligence and computing advances evolve, enabling timely replacement.
Scanners flag use of broken or weak cryptographic algorithms via known-vulnerability databases.
Enforces approved cryptographic algorithms for each use case, blocking use of broken or risky algorithms.
Flaw remediation replaces broken or risky cryptographic algorithms once safer implementations are released by vendors.