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May 11, 2022
CVE-2022-26923 - Active Directory Domain Services Elevation of Privilege Vulnerability
THE THREAT Microsoft has disclosed a new vulnerability impacting Active Directory Certificate Services (ADCS) tracked as CVE-2022-26923 (Active Directory Domain Services Elevation of Privilege Vulnerability). If exploited successfully, an authenticated attacker can escalate privileges in environments where ADCS is running on the domain. eSentire is aware of technical details and tooling [2] for…
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Waterloo, ON, May 17, 2022 — eSentire, the Authority in Managed Detection and Response (MDR), maintains one of the most secure and robust IT environments of any MDR provider in the industry. To that end, eSentire today announced that it has received the Payment Card Industry Data Security Standard (PCI DSS) certification, considered one of the most stringent and comprehensive payment card…
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Security advisories — Mar 17, 2022

Russian APT Exploits Known Vulnerability

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THE THREAT

In a joint report, the FBI and CISA have disclosed recent Russian state-sponsored APT activity. An unspecified Russian APT group was observed abusing misconfigured Multi-Factor Authentication (MFA) and the PrintNightmare vulnerability (CVE-2021-34527) in a recent attack against a Non-Government Organization (NGO). The attack resulted in the theft of sensitive data.

Organizations are strongly recommended to ensure that the use of MFA is enforced and reviewed for proper implementation. Additionally, all devices impacted by PrintNightmare need to be up to date on security patches in order to prevent abuse.

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Additional information

The recent campaign impacted a Non-Government Organization (NGO). In the attack, initial access was gained via a bruteforce attack. The compromised account was then used to enroll a new device in the company’s MFA platform. After persistent access was achieved, the threat actors exploited the PrintNightmare vulnerability to allow for lateral movement and the eventual theft of information.

CVE-2021-34527 was disclosed in July 2021. It is a Remote Code Execution vulnerability in the Windows Print Spooler service. Initial recommendations related to PrintNightware were to ensure that Internet-facing devices were patched. As widespread exploitation has been ongoing for months and exploits have been widely adopted by multiple threat actor groups, organizations need to ensure that all devices, including internal, are up to date on relevant patches.

References

[1] https://www.cisa.gov/uscert/ncas/alerts/aa22-074a

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