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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 — Feb 27, 2019

Increase in Attacks on GPON Routers

1 min read

eSentire Threat Intelligence has observed an increase in exploitation attempts targeting consumer-grade network devices manufactured by Dasan and D-Link.

Customers are advised to review the below details and apply mitigation actions if applicable. Successful exploitation of vulnerable devices can result in remote code execution and ongoing communication between the threat actor and infected devices.

What we’re doing about it

Observed infrastructure hosting exploit payloads have been added to the eSentire global blacklist.

What you should do about it

Additional information

The identified spike in attacks does not appear to be targeted against a specific client or industry. eSentire Threat Intelligence has identified roughly three thousand unique IP addresses being used to deliver the exploit attempts. The wide number of devices launching these attacks may indicate the use of a botnet.

It is not uncommon for botnet controllers to attempt to increase the number of devices in their botnet by using tactics similar to this. The infected devices can then be used to launch additional attacks such as distributing malicious content or launching DDoS attacks.


References:

[1] GPON Router Vulnerability Antidote
https://www.vpnmentor.com/tools/gpon-router-antidote-patch/

[2] D-Link DSL-2750B - OS Command Injection (Metasploit)
https://www.exploit-db.com/exploits/44760/