CVE-2023-29357 — Actively Exploited: SharePoint Server (Microsoft)
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.
| CVE ID | CVE-2023-29357 |
|---|---|
| Vendor | Microsoft |
| Product | SharePoint Server |
| Vulnerability name | Microsoft SharePoint Server Privilege Escalation Vulnerability |
| Date added | 2024-01-10 |
| Remediation due | 2024-01-31 |
| Known ransomware use | Known |
| Required action | Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. |
| 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. |
| Source | CISA Known Exploited Vulnerabilities |
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