XSS in Microsoft Sharepoint
CVE-2018-8518
An elevation of privilege vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server, aka "Microsoft SharePoint Elevation of Privilege Vulnerability." This affects Microsoft SharePoint. This CVE ID is unique from CVE-2018-8480, CVE-2018-8488, CVE-2018-8498.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.028 (86.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000
Affected products
- Microsoft Sharepoint — versions Enterprise Server 2013 Service Pack 1, Enterprise Server 2016
- Microsoft Sharepoint Enterprise Server — versions 2013, 2016
Weakness classification (CWE)
Public proof-of-concept exploits
- ARPSyndicate/cvemon
- ErdemOzgen/ActiveDirectoryAttacks
- Nieuport/Active-Directory-Kill-Chain-Attack-Defense
- R0B1NL1N/AD-Attack-Defense
- Whiteh4tWolf/Attack-Defense
- ZyberPatrol/Active-Directory
- aymankhder/AD-attack-defense
- bhataasim1/AD-Attack-Defence
- geeksniper/active-directory-pentest
- hackeremmen/Active-Directory-Kill-Chain-Attack-Defense-
References
- www.securityfocus.com/bid/105496 (VDB Entry, Third Party Advisory, vdb-entry)
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8518 (Patch, Vendor Advisory)
- www.securitytracker.com/id/1041835 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2018-8518?
- CVE-2018-8518 is a medium-severity vulnerability in Microsoft Sharepoint, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2018-10-10.
- How severe is CVE-2018-8518?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2018-8518 known to be exploited?
- 18 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.