CVE-2020-1025
Last modified
CVE-2020-1025 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An elevation of privilege vulnerability exists when Microsoft SharePoint Server and Skype for Business Server improperly handle OAuth token validation. An attacker who successfully exploited the vulnerability could bypass authentication and achieve improper access. To exploit this vulnerability, an attacker would need to modify the token. The update addresses the vulnerability by modifying how Microsoft SharePoint Server and Skype for Business Server validate tokens.. EPSS estimates a 5.85% chance of exploitation in the next 30 days.
Description
An elevation of privilege vulnerability exists when Microsoft SharePoint Server and Skype for Business Server improperly handle OAuth token validation. An attacker who successfully exploited the vulnerability could bypass authentication and achieve improper access. To exploit this vulnerability, an attacker would need to modify the token. The update addresses the vulnerability by modifying how Microsoft SharePoint Server and Skype for Business Server validate tokens.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Microsoft | Lync | 2013 | — |
| Microsoft | Sharepoint Enterprise Server | 2016 | — |
| Microsoft | Sharepoint Foundation | 2013 | Sp1 |
| Microsoft | Sharepoint Server | 2019 | — |
| Microsoft | Skype For Business | 2015 | Cumulative Update 8 |
| Microsoft | Skype For Business | 2019 | Cumulative Update 2 |
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1025Patch, Vendor Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1025Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-1025?
How severe is CVE-2020-1025?
How do I fix CVE-2020-1025?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2020
- CVE-2020-10244JPaseto before 0.3.0 generates weak hashes when using v2.loc…7.5
- CVE-2020-10245CODESYS V3 web server before 3.5.15.40, as used in CODESYS C…9.8
- CVE-2020-10246MISP 2.4.122 has reflected XSS via unsanitized URL parameter…6.1
- CVE-2020-10247MISP 2.4.122 has Persistent XSS in the sighting popover tool…6.1
- CVE-2020-10248BWA DiREX-Pro 1.2181 devices allow remote attackers to disco…7.5
- CVE-2020-10249BWA DiREX-Pro 1.2181 devices allow full path disclosure via …5.3
- CVE-2020-10250BWA DiREX-Pro 1.2181 devices allow remote attackers to execu…9.8
- CVE-2020-10251In ImageMagick 7.0.9, an out-of-bounds read vulnerability ex…5.5
- CVE-2020-10252An issue was discovered in ownCloud before 10.4. Because of …8.3
- CVE-2020-10254An issue was discovered in ownCloud before 10.4. An attacker…5.9
- CVE-2020-10255Modern DRAM chips (DDR4 and LPDDR4 after 2015) are affected …9
- CVE-2020-10256An issue was discovered in beta versions of the 1Password co…9.8
Are you affected by CVE-2020-1025?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST