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Home > Cybersecurity > Zero-day Sophos vulnerability is being exploited by hackers

Zero-day Sophos vulnerability is being exploited by hackers

Volexity announced that they detected Chinese hackers exploiting a zero-day flaw found in Sophos' Firewall product.

Erdem Yasar by Erdem Yasar
June 17, 2022
in Cybersecurity
2 min read
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Zero-day Sophos vulnerability is being exploited by hackers
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Volexity announced that multiple Chinese advanced persistent threat groups are targeting an organization by leveraging a zero-day exploit to compromise the firewall. According to Volexity’s report, the attackers implemented an interesting webshell backdoor, create a secondary form of persistence, and launch attacks. With the attacks, the hackers are aiming to breach the web servers that are hosting the organization’s website.

Breaching servers

Volexity stated that the method the hackers are using is rare and hard to detect. The hackers are exploiting a flaw tracked as CVE-2022-1040 that has a CVSS score of 9.8. The authentication bypass vulnerability allows attackers to execute arbitrary code remotely, affecting Sophos Firewall version 18.5.3 and earlier. Patch for the flaw was issued on the 25th of March.

Volexity detected anomalous activity from a customer’s Sophos Firewall, through its Network Security Monitoring on March 8. The forensic investigation led to the discovery of a backdoor on the firewall along with evidence of exploitation dating back to March 5. The hacker groups were using access to the firewall to conduct man-in-the-middle attacks. It allows attackers to compromise additional systems outside of the network where the firewall resided, with the collected data. Sophos has published advice on mitigating this vulnerability in their advisory. Specifically, the advisory states the following:

« Sophos has observed this vulnerability being used to target a small set of specific organizations primarily in the South Asia region. We have informed each of these organizations directly. Sophos will provide further details as we continue to investigate. There is no action required for Sophos Firewall customers with the “Allow automatic installation of hotfixes” feature enabled. Enabled is the default setting. »

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Tags: SophosVolexity
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Erdem Yasar

Erdem Yasar

Erdem Yasar is a news editor at Cloud7 News. Erdem started his career by writing video game reviews in 2007 for PC World magazine while he was studying computer engineering. In the following years, he focused on software development with various programming languages. After his graduation, he continued to work as an editor for several major tech-related websites and magazines. During the 2010s, Erdem Yasar shifted his focus to cloud computing, hosting, and data centers as they were becoming more popular topics in the tech industry. Erdem Yasar also worked with various industry-leading tech companies as a content creator by writing blog posts and other articles. Prior to his role at Cloud7 News, Erdem was the managing editor of T3 Magazine.

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