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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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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 — Aug 14, 2019

RDP Remote Code Execution Vulnerabilities

2 min read

The threat

On August 13th, 2019, Microsoft announced multiple vulnerabilities in Remote Desktop Services (RDP) [1]. If exploited, an unauthenticated threat actor could execute remote code on vulnerable systems. CVE-2019-1181 and CVE-2019-1182 are rated critical due to the wide variety of vulnerable versions, while CVE-2019-1222 and CVE-2019-1226 affect fewer systems and remain unclassified. Attacks exploiting these vulnerabilities have not been identified in the wild at this time.

Due to the wide use of RDP and high value of Remote Code Execution (RCE), it is probable that exploitation will occur in the near future. Users and administrators should apply the latest Microsoft security patches as soon as possible.

What we’re doing about it

What you should do about it

Additional information

The major concern relating to CVE-2019-1181 and CVE-2019-1182 is wormability. If incorporated into existing malware types, the RDP vulnerabilities could be made to facilitate rapid malware spread. This risk may also be present in CVE-2019-1222 and CVE-2019-1226, but this remains unconfirmed at this time.

At the time of writing, Microsoft has disabled updates on machines running Symantec or Norton antivirus solutions, due to compatibility issues [2].

Affected Versions (CVE-2019-1181 and CVE-2019-1182):

Affected Versions (CVE-2019-1222 and CVE-2019-1226):

References:

[1] https://msrc-blog.microsoft.com/2019/08/13/patch-new-wormable-vulnerabilities-in-remote-desktop-services-cve-2019-1181-1182/

[2] https://support.microsoft.com/en-us/help/4512486/windows-7-update-kb4512486

[3] https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1181

[4] https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1182

[5] https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1222

[6] https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1226