Auth bypass in Progress Telerik Ui For Asp.net Ajax
CVE-2021-28141
An issue was discovered in Progress Telerik UI for ASP.NET AJAX 2021.1.224. It allows unauthorized access to MicrosoftAjax.js through the Telerik.Web.UI.WebResource.axd file. This may allow the attacker to gain unauthorized access to the server and execute code. To exploit, one must use the parameter _TSM_HiddenField_ and inject a command at the end of the URI. NOTE: the vendor states that this is not a vulnerability. The request's output does not indicate that a "true" command was executed on the server, and the request's output does not leak any private source code or data from the server
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.022 (82.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
- Progress Telerik Ui For Asp.net Ajax — versions 2021.1.224
Weakness classification (CWE)
References
- pastebin.com/JULpfvFJ (Exploit, Third Party Advisory)
- gist.github.com/shreyasfegade/e2480e26b2ed1d0c7175ecf7cb15f9c1 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-28141?
- CVE-2021-28141 is a critical-severity vulnerability in Progress Telerik Ui For Asp.net Ajax, classified under Missing Authorization. CVSS score: 9.8/10. Published 2021-03-11.
- How severe is CVE-2021-28141?
- Critical severity. CVSS v3 base score is 9.8 out of 10.