Vulnerability Report

CVE-2017-9248

CISA KEV Active

Title: Telerik Ui For Asp.Net Ajax Cross-Site Scripting (XSS)

XSS

Proof Of Concept

PoC Available for CVE-2017-9248

CWE Category CWE-522
Published Date Jul 03, 2017
Modified Date Apr 21, 2026
Exploit Status Available
Score 9.8 CVSS v3.1
Exploit Probability (EPSS)
89.44%

Vulnerability Summary

CVE-2017-9248: Telerik.Web.UI.dll in Progress Telerik UI for ASP.NET AJAX before R2 2017 SP1 and Sitefinity before 10.0.6412.0 does not properly protect Telerik.Web.UI.DialogParametersEncryptionKey or the MachineKey, which makes it easier for remote attackers to defeat cryptographic protection mechanisms, leading to a MachineKey leak, arbitrary file uploads or downloads, XSS, or ASP.NET ViewState compromise.

Impacted Vendors

T
telerik 1
P
progress 1

Reference Links

http://www.securityfocus.com/bid/99965 http://www.telerik.com/blogs/security-alert-for-telerik-ui-for-asp.net-ajax-and-progress-sitefinity http://www.telerik.com/support/kb/aspnet-ajax/details/cryptographic-weakness https://www.exploit-db.com/exploits/43873/ http://www.securityfocus.com/bid/99965 http://www.telerik.com/blogs/security-alert-for-telerik-ui-for-asp.net-ajax-and-progress-sitefinity http://www.telerik.com/support/kb/aspnet-ajax/details/cryptographic-weakness https://www.exploit-db.com/exploits/43873/ https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-9248
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.8
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v3.1
Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0
Severity CRITICAL
9.8
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
Source Entity [email protected]
Severity HIGH
7.5
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2017-9248 Exploits & PoCs (Proof Of Concept)

Exploit-DB https://www.exploit-db.com/exploits/43873
View Code
MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.