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SECURITY ADVISORIES
Nov 22, 2021
Microsoft Exchange Vulnerability - CVE-2021-42321
THE THREAT eSentire has identified publicly available Proof-of-Concept (PoC) exploit code, for the critical Microsoft Exchange vulnerability CVE-2021-42321. CVE-2021-42321 was announced as part of Microsoft’s November Patch Tuesday release. Exploitation would allow a remote threat actor, with previous authentication, to execute code on vulnerable servers. Prior to the patch release, Microsoft…
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Telarus and eSentire Expand Partnership to Safeguard Enterprises Globally Against Business Disrupting Ransomware and Zero-Day Attacks
London, UK and Sydney, Australia– Oct. 28, 2021 - eSentire, recognized globally as the Authority in Managed Detection and Response (MDR), today announces the expansion of its partnership with Telarus, the largest privately-held distributor of business cloud infrastructure and contact centre services. Building on their mutual success across North America, Telarus will bring eSentire’s Managed…
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Security advisories — Nov 11, 2021

GlobalProtect Portal VPN Vulnerability

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THE THREAT

Security researchers have identified a critical vulnerability impacting Palo Alto Networks firewalls using the GlobalProtect Portal VPN. The vulnerability is tracked at CVE-2021-3064 (CVSS: 9.8). Exploitation of this vulnerability allows an unauthenticated remote threat actor to disrupt system processes and cause Remote Code Execution (RCE); exploitation may allow an attacker to gain initial access into networks and enable lateral movement.

Attacks involving CVE-2021-3064 have not been identified at this time. Threat actors are expected to abuse this vulnerability in the near future as the attack complexity is low and the potential impact of abuse is high.

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Additional information

CVE-2021-3064 impacts PAN-OS 8.1, versions earlier than PAN-OS 8.1.17. The vulnerability was discovered by Randori; the company has confirmed that it was able to develop reliable exploit code. Randori has stated that technical details will be released in thirty days, after organizations have had time to deploy security patches. It is critical that impacted organizations deploy patches before these details are released, as this release will increase the likelihood of exploitation by threat actors.

According to results from the IoT search engine Shodan, there are over 10,000 vulnerable exposed instances of PAN-OS that are internet facing.

References:

[1] https://www.randori.com/blog/cve-2021-3064/
[2] https://security.paloaltonetworks.com/CVE-2021-3064

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