Security Experts:

Connect with us

Hi, what are you looking for?

SecurityWeekSecurityWeek

Cybercrime

GoAnywhere Zero-Day Attack Victims Start Disclosing Significant Impact

Organizations hit by exploitation of the GoAnywhere MFT zero-day vulnerability CVE-2023-0669 have started coming forward.

Organizations hit by attacks exploiting a recently disclosed zero-day vulnerability affecting the GoAnywhere managed file transfer (MFT) software have started coming forward and disclosing impact. 

The vulnerability, tracked as CVE-2023-0669, was disclosed by GoAnywhere developer Fortra on February 1, after the company became aware of in-the-wild exploitation. Mitigations and indicators of compromise (IoCs) were released immediately, but a patch was only made available a week later. 

Information about the attacks exploiting CVE-2023-0669 and victims of these attacks are now coming to light. 

In a filing with the US Securities and Exchange Commission (SEC), Community Health Systems (CHS), one of the largest healthcare services providers in the United States, revealed that a “security breach experienced by Fortra” resulted in the exposure of personal and protected health information (PHI) belonging to patients of CHS affiliates.

The organization is conducting an investigation, but it currently estimates that roughly one million individuals may have been impacted by the incident. CHS said the breach does not appear to have had any impact on its own information systems and business operation, including the delivery of patient care. 

A source told SecurityWeek that several major companies have been hit by the GoAnywhere zero-day attacks and it’s only a matter of time before they disclose significant breaches. 

Cybersecurity firm Huntress reported last week that it had investigated an attack apparently exploiting CVE-2023-0669 and managed to link it to a Russian-speaking threat actor named Silence. This group has also been tied to TA505, a threat group known for distributing the Cl0p ransomware. 

Indeed, the Cl0p ransomware group has taken credit for the GoAnywhere attack, telling Bleeping Computer that they managed to steal data from more than 130 organizations. However, the hackers have not provided any evidence to back their claims. At the time of writing, there is no mention of Fortra or GoAnywhere on Cl0p’s Tor-based website. 

If confirmed, this would not be the first time cybercriminals linked to the Cl0p ransomware have exploited vulnerabilities in a file transfer service used by major organizations to steal data. 

In late 2020, a group targeted Accellion’s FTA service to steal data belonging to several organizations, including grocery and pharmacy chain Kroger, the Australian Securities and Investments Commission (ASIC), law firm Jones Day, the Office of the Washington State Auditor (SAO), and the Reserve Bank of New Zealand.

At the time of writing, there are more than 1,000 internet-exposed instances of GoAnywhere. However, according to Fortra, exploitation requires access to the application’s admin console, and at least some of the exposed instances are associated with the product’s web client interface, which is not impacted. 

CISA has added CVE-2023-0669 to its Known Exploited Vulnerabilities Catalog, instructing federal agencies to patch the flaw until March 3.

Related: Patch Tuesday: Microsoft Plugs Windows Hole Exploited in Ransomware Attacks

Related: Decade-Old Adobe ColdFusion Vulnerabilities Exploited by Ransomware Gang

Related: PetitPotam Vulnerability Exploited in Ransomware Attacks

Written By

Eduard Kovacs (@EduardKovacs) is a contributing editor at SecurityWeek. He worked as a high school IT teacher for two years before starting a career in journalism as Softpedia’s security news reporter. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering.

Click to comment

Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

Join this webinar to learn best practices that organizations can use to improve both their resilience to new threats and their response times to incidents.

Register

Join this live webinar as we explore the potential security threats that can arise when third parties are granted access to a sensitive data or systems.

Register

Expert Insights

Related Content

Cybercrime

Zendesk is informing customers about a data breach that started with an SMS phishing campaign targeting the company’s employees.

Vulnerabilities

Less than a week after announcing that it would suspended service indefinitely due to a conflict with an (at the time) unnamed security researcher...

Cybercrime

The release of OpenAI’s ChatGPT in late 2022 has demonstrated the potential of AI for both good and bad.

Cybercrime

Satellite TV giant Dish Network confirmed that a recent outage was the result of a cyberattack and admitted that data was stolen.

Cybercrime

The changing nature of what we still generally call ransomware will continue through 2023, driven by three primary conditions.

Application Security

PayPal is alerting roughly 35,000 individuals that their accounts have been targeted in a credential stuffing campaign.

Cybercrime

No one combatting cybercrime knows everything, but everyone in the battle has some intelligence to contribute to the larger knowledge base.

Cybercrime

A recently disclosed vBulletin vulnerability, which had a zero-day status for roughly two days last week, was exploited in a hacker attack targeting the...