Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since January 10, 2024.
CVE-2023-29357
Microsoft SharePoint Server Privilege Escalation Vulnerability
Added to KEV January 10, 2024
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2023-29357
- CWE
- CWE-303
- Affected products
- SharePoint Server · Microsoft SharePoint Server · Microsoft
What happened
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.
What it means for your business
Microsoft SharePoint Server is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2023-29357). 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. CISA remediation due date: 2024-01-31. If you need help checking exposure, call (864) 335-9223.
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA due date: January 31, 2024
Sources
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