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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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Jul 12, 2021
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 — Feb 26, 2019

AMD Processor Vulnerabilities

1 min read

CTSLabs has published a whitepaper outlining 13 critical vulnerabilities discovered in AMD processors. The vulnerabilities, classified under the names RyzenFall, Fallout, Chimera and MasterKey, affect AMD Secure Processors and AMD Ryzen Chipsets. CTSLabs states that if exploited, these vulnerabilities would allow attackers to install malicious code inside the Secure Processor, allow read and write access to protected memory areas, steal network credentials protected by Windows Credential Guard, cause physical damage to hardware and perform a variety of other malicious tasks. If their statement is accurate, this represents a critical and widespread security issue.

According to the whitepaper, successful exploitation requires local access with elevated privileges. eSentire has not observed any attacks in the wild and no proof of concept code has been identified [1].

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Technical details for these vulnerabilities have not being released. As such, eSentire cannot attest to the validity of CTSLabs’ claims. In a statement, AMD was recently made aware of the issues and is currently investigating. Mitigating actions should be reserved until the findings and technical details have been confirmed by AMD.

[1] https://safefirmware.com/amdflaws_whitepaper.pdf