SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2017-11357

Telerik UI for ASP.NET AJAX Insecure Direct Object Reference Vulnerability

KEVCRITICAL 9.8EPSS 77.7%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 16 February 2023). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

Progress Telerik UI for ASP.NET AJAX before R2 2017 SP2 does not properly restrict user input to RadAsyncUpload, which allows remote attackers to perform arbitrary file uploads or execute arbitrary code.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
77.68% probability · 100th percentile
CISA KEV
Listed 26 January 2023 · due 16 February 2023 · used in ransomware campaigns
Weakness
CWE-434
Affected
progress/telerik ui for asp.net ajax
Source
cve@mitre.org

CISA notes

Apply updates per vendor instructions. https://docs.telerik.com/devtools/aspnet-ajax/knowledge-base/asyncupload-insecure-direct-object-reference; https://nvd.nist.gov/vuln/detail/CVE-2017-11357

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.