CVE-2017-9248 : Telerik.Web.UI.dll in Progress Telerik UI for ASP.NET AJAX before R2 2017 SP1 an

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.

Published 2017-07-03 19:29:00

Updated 2025-03-14 20:05:03

Source MITRE

View at NVD, CVE.org

Vulnerability category: Cross site scripting (XSS)

Products affected by CVE-2017-9248

Progress » Sitefinity
Versions before (<) 10.0.6412.0
cpe:2.3:a:progress:sitefinity:*:*:*:*:*:*:*:*
Matching versions
Telerik » Ui For Asp.net Ajax
Versions up to, including, (<=) 2017.2.503
cpe:2.3:a:telerik:ui_for_asp.net_ajax:*:*:*:*:*:*:*:*
Matching versions

CVE-2017-9248 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:

Progress Telerik UI for ASP.NET AJAX and Sitefinity Cryptographic Weakness Vulnerability

CISA required action:

Apply updates per vendor instructions.

CISA description:

Progress Telerik UI for ASP.NET AJAX and Sitefinity have a cryptographic weakness in Telerik.Web.UI.dll that can be exploited to disclose encryption keys (Telerik.Web.UI.DialogParametersEncryptionKey and/or the MachineKey), perform cross-site-scripting (XSS) attacks, compromise the ASP.NET ViewState

Notes:

https://nvd.nist.gov/vuln/detail/CVE-2017-9248

Added on 2021-11-03 Action due date 2022-05-03

Exploit prediction scoring system (EPSS) score for CVE-2017-9248

EPSS FAQ

88.17%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 99 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2017-9248

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	10.0	6.4	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: Partial
9.8	CRITICAL	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	134c704f-9b21-4f2e-91b3-4a467353bcc0	2025-02-07
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST	2024-07-25
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2017-9248

CWE-522 Insufficiently Protected Credentials

The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.
Assigned by:
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
- nvd@nist.gov (Primary)

References for CVE-2017-9248

http://www.securityfocus.com/bid/99965

Telerik Web UI CVE-2017-9248 Cryptographic Security Bypass Vulnerability
Broken Link;Third Party Advisory;VDB Entry
http://www.telerik.com/support/kb/aspnet-ajax/details/cryptographic-weakness

Cryptographic Weakness - Telerik UI for ASP.NET AJAX - KB
Mitigation;Vendor Advisory
http://www.telerik.com/blogs/security-alert-for-telerik-ui-for-asp.net-ajax-and-progress-sitefinity

Security Alert for UI for ASP.NET AJAX and Sitefinity
Vendor Advisory
https://www.exploit-db.com/exploits/43873/

Telerik UI for ASP.NET AJAX 2012.3.1308 < 2017.1.118 - Encryption Keys Disclosure
Exploit;Third Party Advisory;VDB Entry