CVE-2023-29357 — Microsoft SharePoint Server Privilege Escalation Vulnerability
CVE-2023-29357: Microsoft SharePoint Server Privilege Escalation Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Microsoft |
| Product | SharePoint Server |
| Date added | 2024-01-10 |
| Due date | 2024-01-31 |
| Ransomware campaign use | Known |
Description
Microsoft SharePoint Server contains an unspecified vulnerability that allows an unauthenticated attacker, who has gained access to spoofed JWT authentication tokens, to use them for executing a network attack. This attack bypasses authentication, enabling the attacker to gain administrator privileges.
Required action (CISA)
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Notes
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-29357; https://nvd.nist.gov/vuln/detail/CVE-2023-29357
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-29357
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog