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Jul 26, 2021
PetitPotam NTLM Relay Attack
THE THREAT PetitPotam is a variant of NTLM Relay attacks discovered by security researcher Gilles Lionel. Proof of Concept code released last week [1] relies on the Encrypting File System Remote (EFSRPC) protocol to provoke a Windows host into performing an NTLM authentication request against an attacker-controlled server, exposing NTLM authentication details or authentication certificates.…
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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 — Oct 14, 2020

Patch Tuesday Priority Vulnerabilities

2 min read

THE THREAT

On October 13th, 2020, Microsoft released its Patch Tuesday vulnerability list, addressing 87 security issues. Two critical vulnerabilities from this release are especially concerning. CVE-2020-16898, also known as Bad Neighbor, is a remote code execution vulnerability affecting multiple versions of Windows 10 and Windows Server 2019 [1]. This vulnerability received the highest criticality rating of all Microsoft vulnerabilities for the month of October (9.8/10), and Microsoft has stated that exploitation is considered likely.

CVE-2020-16952 is a remote code execution vulnerability affecting multiple versions of Microsoft SharePoint Server [2]. Proof of Concept (PoC) exploit code for this vulnerability emerged on the evening of October 13th. eSentire expects exploitation by threat actors in the immediate future due to the availability of a PoC exploit code.

Organizations are strongly encouraged to apply the applicable Microsoft patches as soon as possible.

What we’re doing about it

What you should do about it

Additional information

CVE-2020-16898 is due to a failure that takes place when TCP/IP stack handles ICMPv6 Router Advertisement packets. Exploitation of the vulnerability would allow a threat actor to execute remote code on vulnerable servers. This vulnerability is especially concerning as it is wormable, meaning that threat actors could craft an exploit that automatically spreads between vulnerable Windows devices.

CVE-2020-16952 is due to a failure by SharePoint to check the source markup of an application package. Successful exploitation would allow a remote threat actor to execute code in the context of the SharePoint application pool/server farm account. Authentication is required in order to exploit this vulnerability [3]. CVE-2020-16952 was rated Exploitation Less Likely by Microsoft, but this is likely to change due to the public release of PoC exploit code.

Exploitation in the wild has not been identified for either of the vulnerabilities mentioned in this advisory.

CVE-2020-16898 Affected Products:

CVE-2020-16952 Affected Products:

References:

[1] https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16898

[2] https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16952

[3] https://srcincite.io/advisories/src-2020-0022/