European Space Agency

Summary

A hacktivist group known as Ghost Squad Hackers defaced a European Space Agency website by exploiting a server-side request forgery vulnerability, gaining unauthorized access to execute remote code. The attackers claimed the breach was conducted solely for entertainment purposes rather than political motives, emphasizing they did not seek to exfiltrate data but aimed to expose the site's susceptibility. The group, which has a history of targeting government and military entities globally, did not disclose the vulnerability to ESA prior to the defacement.

Motives

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TTPs

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Description

On July 15, 2020, the Ghost Squad Hackers group defaced the European Space Agency’s (ESA) business.esa.int website. The attackers exploited a Server-Side Request Forgery (SSRF) vulnerability that enabled remote code execution on the server, granting them unauthorized access to the domain. SSRF vulnerabilities allow malicious actors to manipulate server-side applications into sending HTTP requests to arbitrary domains, potentially leading to unauthorized data access or command execution within internal systems. The hackers replaced the legitimate website content with a defacement page, though the specific nature of the altered content was not detailed in available sources. Ghost Squad Hackers member "s1ege" characterized the intrusion as non-political and motivated solely by entertainment, emphasizing the group’s identity as hacktivists who typically target entities for causes aligned with activism. The group did not attempt to exfiltrate or leak ESA data, nor did they notify the agency of the vulnerability prior to or following the attack.

The incident demonstrated a security lapse in ESA’s web infrastructure, though the full operational impact beyond the temporary defacement remained unspecified. Ghost Squad Hackers cited prior compromises of high-profile targets including US military entities, the European Union, Israeli Defense Forces, and central banks, though these claims were not independently verified in the provided material. Their exploitation of the SSRF flaw highlighted risks associated with such vulnerabilities, which can facilitate lateral movement within networks or unauthorized access to backend systems. ESA did not publicly disclose remediation steps or confirm the vulnerability’s patching timeline based on available information. The attackers reiterated their disinterest in data theft or persistent access, framing the defacement as a demonstration of the site’s susceptibility. No further actions by Ghost Squad Hackers against ESA or claims of additional compromised systems were reported following the initial defacement.

Sources

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