Bug Identified in Sophos Permits RCE on Firewalls

  • By Patrick Ryan
  • Mar 30, 2022

A critical digital security bug within Sophos is allowing RCE to infiltrate firewalls. RCE is an acronym that stands for remote code execution. This digital security problem results from the vendor's failure to implement the optimal authentication bypass.

Though Sophos insists the weakness within the firewall has been plugged, only time will tell if the fix proves permanent. Here's a quick look at the details of the bug.

What Do We Know About the Flaw?

The flaw in question is referred to with the formal label of CVE-2022-1040. This bug is a vulnerability best described as an authentication bypass within the Sophos firewall's web admin and user portal. The flaw pertains to version 18.5.3 and older versions of the appliance.

Why is Sophos Worried About the Bug?

The exploit of the bug provides hackers with the ability to control the device, setting the stage for them to ultimately disable the protective firewall and access sensitive information. The disabling of the firewall allows for the addition of new users and the use of the firewall as a launching pad for additional digital infiltrations within the network.  

Though Sophos' representatives refused to provide any technical information about the bug or note its CVSS score, they made it clear that the bug is considered critical. Everyone who uses Sophos should implement the fix as described below.

What is the Fix?

Sophos provided a hotfix to address the bug. However, those who lack automatically enabled updates are required to implement a manual update. Sophos also provided a security advisory that detailed a workaround solution. According to the security advisory, Sophos customers can protect their computer and network against potential attacks by verifying the web admin and user portal are not exposed to WAN.  

In other words, Sophos customers should immediately disable WAN access to the web admin and user portal with the use of device access best practices. As an alternative, these users should use Sophos Central and VPN in the context of working through remote access.

Who Discovered the Digital Security Flaw?

According to Sophos, an independent researcher who has not yet been named was credited with identifying the flaw within the Sophos system. The bug's discovery is crucial as it is the third such bug identified this month alone. Two other bugs were discovered in March, one of which was a bug pertaining to insecure permissions access, and the other was a SQL injection problem post-authentication. Those two initial bugs threatened the digital security vendor's appliance for threat management.

About the Author
IDStrong Logo

Related Articles

Instagram Vulnerability Allowed Hackers Access to Control Your Phone

Security experts Check Point Research discovered a critical vulnerability while examining Instagra ... Read More

Alien Malware Infects More than 226 Mobile Apps and Steals Bank Data

As reported on September 24, 2020, by ZDNet and ThreatPost, a new strain of malware named “Alien ... Read More

Universal Health Systems Hit by Ransomware Attack

Universal Health Systems (UHS), a Fortune 500 company owning more than 400 hospitals across the co ... Read More

Exchange Server Bug Exposes a Big Risk to Hackers

Months after Microsoft released a patch to fix a serious flaw in MS Exchange Server, more than 61% ... Read More

Clients’ Bank Data Exposed in Blackbaud Ransomware Attack

Blackbaud software was victim to a ransomware attack last May, and new information suggests that c ... Read More

Latest Articles

Flagstar Bank Breach Impacts More Than a Million Customers

Flagstar Bank Breach Impacts More Than a Million Customers

Flagstar Bank is in the news for the wrong reason. The bank recently publicized the fact that it discovered a digital breach.

Weekly Recap June 24 2022

Weekly Recap June 24 2022

We are nearly halfway through 2022. News stories detailing hacks and other digital breaches continue to roll in on a daily basis.

Cybercrime Related to Travel Soars at the Year’s Halfway Point

Cybercrime Related to Travel Soars at the Year’s Halfway Point

There has been a significant spike in tourism following the gradual decline of the coronavirus pandemic.  The increase in travel has caught the attention of digital miscreants looking to scam tourists as well as travel services providers.

Featured Articles

How to Buy a House with Bad Credit

How to Buy a House with Bad Credit

Buying your own home is the American Dream, but it might seem out of reach to those with bad credit. However, the good news is, if your credit is less than perfect, you do still have options and in most cases, can still buy a home.

How Secure Is Your Password? Tips to Improve Your Password Security

How Secure Is Your Password? Tips to Improve Your Password Security

Any good IT article on computers and network security will address the importance of strong, secure passwords. However, the challenge of good passwords is that most people have a hard time remembering them, so they use simple or obvious ones that pose a security risk.

Top 10 Senior Scams and How to Prevent Them

Top 10 Senior Scams and How to Prevent Them

Senior scams are becoming a major epidemic for two reasons. First, seniors often have a lot of money in the bank from a life of working hard and saving.