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Jul 29, 2021
UPDATE: PetitPotam NTLM Relay Attack
THE THREAT PetitPotam is a variant of the NTLM Relay attack discovered by security researcher Gilles Lionel. It is tracked as an authentication bypass vulnerability in Active Directory (Certificate Services); currently no CVE identifier has been assigned to this vulnerability. Proof of Concept (PoC) code released last week [1] relies on the Encrypting File System Remote (EFSRPC) protocol to…
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Tecala and eSentire Partner to Protect Enterprises across APAC from Business-Disrupting Cyber Attacks
Sydney, 12 July, 2021 - Tecala, Australia’s award-winning technology services and IT consulting provider, today announced it has chosen eSentire, the global Authority in Managed Detection and Response (MDR) cybersecurity services, as their exclusive MDR solution provider in Australia and New Zealand. This partnership will enable Tecala to augment its cybersecurity practice and offer enterprises…
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Security advisories — May 21, 2020

Active Exploitation of CVE-2019-18935

1 min read

THE THREAT

eSentire has identified active exploitation of the Telerik UI vulnerability, tracked as CVE-2019-18935. The Telerik vulnerability allows for the possibility of remote code execution. In the case identified by eSentire, the vulnerability was exploited in order to deliver a crypto-currency mining malware, but exploitation could also allow threat actors to deploy any malicious content, including ransomware. It is highly recommended that organizations apply the official Telerik patches in order to avoid impact.

What we’re doing about it

What you should do about it

Additional information

CVE-2019-18935 was originally released in December of 2019 and is linked to a deserialization issue with .NET JavaScriptSerializer through RadAsyncUpload [3]. Public exploitation of the vulnerability was first reported in mid-May of 2020. Successful exploitation of CVE-2019-18935 requires the use of additional vulnerabilities or prior knowledge of the encryption keys.

Affected Products:

References:

[1] https://www.telerik.com/support/kb/aspnet-ajax/details/allows-javascriptserializer-deserialization

[2] https://docs.telerik.com/devtools/aspnet-ajax/controls/asyncupload/security#recommended-settings

[3] https://www.cisecurity.org/advisory/a-vulnerability-in-telerik-ui-for-aspnet-could-allow-for-arbitrary-code-execution_2020-015/