Facebook Google Plus Twitter LinkedIn YouTube RSS Menu Search Resource - BlogResource - WebinarResource - ReportResource - Eventicons_066 icons_067icons_068icons_069icons_070

CVE-2020-12271: Zero-Day SQL Injection Vulnerability in Sophos XG Firewall Exploited in the Wild

Sophos pushes a hotfix to address a SQL injection vulnerability in Sophos XG Firewall that was exploited in the wild.

Background

On April 22, Sophos published a knowledge base entry on the Sophos Community regarding the discovery of a zero-day vulnerability in the Sophos XG Firewall that was exploited in the wild. According to Sophos, they were able to identify “an attack against physical and virtual XG Firewall units” after reviewing the report of a “suspicious field value” in the XG Firewall’s management interface. The attack targets the XG Firewall administration interface, which is accessible via the user portal, over HTTPs, or on the WAN zone. They discovered that this also affected systems when the port used for the administration interface or user portal was also used to expose a firewall service, such as the SSL VPN.

Analysis

CVE-2020-12271 is a pre-authentication SQL injection vulnerability that exists in the Sophos XG Firewall/Sophos Firewall Operating System (SFOS). Further information about this vulnerability has not been made public. However, Sophos did confirm that exploitation of this flaw would allow an attacker to exfiltrate “XG Firewall-resident data,” which depending on the configuration, could include local user account credentials, such as usernames and hashed passwords. As for Active Directory and LDAP passwords, Sophos says these were not compromised during the attacks. On April 26, Sophos published a separate article, “Asnarök Trojan targets firewalls,” which analyzes the components and intent of the attack in greater detail and provides a better understanding of the malware used in one of the attacks.

Source: "Asnarök" Trojan targets firewalls

Proof of concept

There was no proof-of-concept (PoC) available for this vulnerability at the time this blog post was published.

Solution

All versions (physical and virtual) of XG Firewall firmware are affected by this vulnerability. A hotfix for XG Firewall and SFOS has been deployed to customers. If customers are running an unsupported version of SFOS, Sophos recommends they upgrade to a supported version immediately.

Product Fixed Versions
Sophos Firewall Operating System 17.0
Sophos Firewall Operating System 17.1
Sophos Firewall Operating System 17.5
Sophos Firewall Operating System 18.0

Affected XG Firewalls that receive this hotfix will see an alert within the management interface, notifying them that the hotfix has been applied and whether or not the vulnerability has been exploited.

Source: Sophos Knowledge Base Entry on the Sophos Community

If the automatic application of hotfixes has been disabled for the XG Firewall, Sophos has provided instructions on how to enable them.

Identifying affected systems

A list of Tenable plugins to identify this vulnerability will appear here as they’re released.

Get more information

Join Tenable's Security Response Team on the Tenable Community.

Learn more about Tenable, the first Cyber Exposure platform for holistic management of your modern attack surface.

Get a free 30-day trial of Tenable.io Vulnerability Management.

Subscribe to the Tenable Blog

Subscribe
Try for Free Buy Now

Try Tenable.io

FREE FOR 30 DAYS

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy. Sign up now.

Buy Tenable.io

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy. Purchase your annual subscription today.

65 assets

$2,275

Buy Now

Try for Free Buy Now

Try Nessus Professional Free

FREE FOR 7 DAYS

Nessus® is the most comprehensive vulnerability scanner on the market today. Nessus Professional will help automate the vulnerability scanning process, save time in your compliance cycles and allow you to engage your IT team.

Buy Nessus Professional

Nessus® is the most comprehensive vulnerability scanner on the market today. Nessus Professional will help automate the vulnerability scanning process, save time in your compliance cycles and allow you to engage your IT team.

Buy a multi-year license and save. Add Advanced Support for access to phone, community and chat support 24 hours a day, 365 days a year. Full details here.

Try for Free Buy Now

Try Tenable.io Web Application Scanning

FREE FOR 30 DAYS

Enjoy full access to our latest web application scanning offering designed for modern applications as part of the Tenable.io platform. Safely scan your entire online portfolio for vulnerabilities with a high degree of accuracy without heavy manual effort or disruption to critical web applications. Sign up now.

Buy Tenable.io Web Application Scanning

Enjoy full access to a modern, cloud-based vulnerability management platform that enables you to see and track all of your assets with unmatched accuracy. Purchase your annual subscription today.

5 FQDNs

$3,578

Buy Now

Try for Free Contact Sales

Try Tenable.io Container Security

FREE FOR 30 DAYS

Enjoy full access to the only container security offering integrated into a vulnerability management platform. Monitor container images for vulnerabilities, malware and policy violations. Integrate with continuous integration and continuous deployment (CI/CD) systems to support DevOps practices, strengthen security and support enterprise policy compliance.

Buy Tenable.io Container Security

Tenable.io Container Security seamlessly and securely enables DevOps processes by providing visibility into the security of container images – including vulnerabilities, malware and policy violations – through integration with the build process.

Learn More about Industrial Security

Get a Demo of Tenable.sc

Please fill out the form below with your contact information and a sales representative will contact you shortly to schedule a demo. You may also include a short comment (limited to 255 characters). Please note that fields with asterisks (*) are mandatory.

Try for Free Contact Sales

Try Tenable Lumin

FREE FOR 30 DAYS

Visualize and explore your Cyber Exposure, track risk reduction over time and benchmark against your peers with Tenable Lumin.

Buy Tenable Lumin

Contact a Sales Representative to see how Lumin can help you gain insight across your entire organization and manage cyber risk.

Request a demo of Tenable.ot

Get the Operational Technology Security You Need.
Reduce the Risk You Don’t.