Chinese UNC4841 Group Exploits Zero-Day Flaw in Barracuda Email Security Gateway

A suspected China-nexus threat actor dubbed UNC4841 has been linked to the exploitation of a recently patched zero-day flaw in Barracuda Email Security Gateway ESG appliances since October 2022. "UNC4841 is an espionage actor behind this wide-ranging campaign in support of the People's Republic o...

Chinese UNC4841 Group Exploits Zero-Day Flaw in Barracuda Email Security Gateway

A suspected China-nexus threat actor dubbed UNC4841 has been linked to the exploitation of a recently patched zero-day flaw in Barracuda Email Security Gateway ESG appliances since October 2022. "UNC4841 is an espionage actor behind this wide-ranging campaign in support of the People's Republic o...

Barracuda Networks Releases Update to Address ESG Vulnerability

Barracuda Networks has released an update to their advisorylink is external addressing a vulnerability—CVE-2023-2868—in their Email Security Gateway Appliance ESG. According to Barracuda, customers should replace impacted appliances immediately. CISA urges organizations to review the Barracuda...

Barracuda Urges Replacing — Not Patching — Its Email Security Gateways

Its not often that a zero-day vulnerability causes a network security vendor to urge customers to physically remove and decommission an entire line of affected hardware -- as opposed to just applying software updates. But experts say that is exactly what transpired this week with Barracuda...

CVE-2023-2868: Total Compromise of Physical Barracuda ESG Appliances

Rapid7 incident response teams are investigating exploitation of physical Barracuda Networks Email Security Gateway ESG appliances dating back to at least November 2022. As of June 6, 2023, as part of an ongoing product incident response, Barracuda is urging ESG customers to immediately...

Barracuda Urges Immediate Replacement of Hacked ESG Appliances

Enterprise security company Barracuda is now urging customers who were impacted by a recently disclosed zero-day flaw in its Email Security Gateway ESG appliances to immediately replace them. "Impacted ESG appliances must be immediately replaced regardless of patch version level," the company sai...

Barracuda Urges Immediate Replacement of Hacked ESG Appliances

Enterprise security company Barracuda is now urging customers who were impacted by a recently disclosed zero-day flaw in its Email Security Gateway ESG appliances to immediately replace them. "Impacted ESG appliances must be immediately replaced regardless of patch version level," the company sai...

The Bug Report - May 2023 Edition

The Bug Report – May 2023 Edition By Mark Bereza · June 7, 2023 Why am I here? In the film The Number 23, Jim Carrey masterfully portrays Walter Sparrow, a man who finds himself obsessed with the number 23 after coming upon a book detailing the 23 enigma, and begins to see it everywhere he looks,...

The Bug Report - May 2023 Edition

The Bug Report – May 2023 Edition By Mark Bereza · June 7, 2023 Why am I here? In the film The Number 23, Jim Carrey masterfully portrays Walter Sparrow, a man who finds himself obsessed with the number 23 after coming upon a book detailing the 23 enigma, and begins to see it everywhere he looks,...

A week in security (May 29 - June 4)

Last week on Malwarebytes Labs: Barracuda Networks patches zero-day vulnerability in Email Security Gateway CISA issues warning to US businesses: Beware of China's state-sponsored cyber actor Microsoft gives Apple a migraine Financial services company OneMain fined $4.25 million for security laps...

The vulnerability of the module responsible for checking embedded emails in the microprogramming-based email security gateway solution, Barracuda Email Security Gateway Appliance, allows a perpetrator to execute arbitrary code.

The vulnerability of the module responsible for checking the content of incoming emails in Barracuda Email Security Gateway Appliance relates to errors in processing input data. Exploiting this vulnerability allows a malicious actor to execute arbitrary code remotely...

Alert: Hackers Exploit Barracuda Email Security Gateway 0-Day Flaw for 7 Months

Enterprise security firm Barracuda on Tuesday disclosed that a recently patched zero-day flaw in its Email Security Gateway ESG appliances had been abused by threat actors since October 2022 to backdoor the devices. The latest findings show that the critical vulnerability, tracked as CVE-2023-286...

Alert: Hackers Exploit Barracuda Email Security Gateway 0-Day Flaw for 7 Months

Enterprise security firm Barracuda on Tuesday disclosed that a recently patched zero-day flaw in its Email Security Gateway ESG appliances had been abused by threat actors since October 2022 to backdoor the devices. The latest findings show that the critical vulnerability, tracked as CVE-2023-286...

[updated] Barracuda Networks patches zero-day vulnerability in Email Security Gateway

On May 20, Barracuda Networks issued a patch for a zero day vulnerability in its Email Security Gateway ESG appliance. The vulnerability existed in a module which initially screens the attachments of incoming emails, and was discovered on May 19. Barracuda's investigation showed that the...

CISA Adds One Known Exploited Vulnerability to Catalog

CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2023-2868 Barracuda Networks ESG Appliance Improper Input Validation Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber acto...

Barracuda Warns of Zero-Day Exploited to Breach Email Security Gateway Appliances

Email protection and network security services provider Barracuda is warning users about a zero-day flaw that it said has been exploited to breach the company's Email Security Gateway ESG appliances. The zero-day is being tracked as CVE-2023-2868 and has been described as a remote code injection...

Barracuda Networks ESG Appliance Improper Input Validation Vulnerability

Barracuda Email Security Gateway ESG appliance contains an improper input validation vulnerability of a user-supplied .tar file, leading to remote command injection...

A Zero-Day Vulnerability Found in Barracuda Email Security Gateway

Threat Level Vulnerability Report For a detailed threat advisory, download the pdf file here Summary Zero-day Vulnerability Exploited in Barracuda Email Security Gateway Appliances, Promptly Patched, and a Subset of Customers Notified; Other Barracuda Products are Unaffected. To receive real-time...

ZeroDay vulnerability fixed in Barracuda Email Security Gateway

Barracuda Networks has fixed a vulnerability in its Email Security Gateway appliance ESG. The vulnerability allows an unauthenticated malicious person to gain access gain access to the vulnerable system and execute arbitrary code. execute. Barracuda Networks indicates that this vulnerability has...

CVE-2023-2868

A remote command injection vulnerability exists in the Barracuda Email Security Gateway appliance form factor only product effecting versions 5.1.3.001-9.2.0.006. The vulnerability arises out of a failure to comprehensively sanitize the processing of .tar file tape archives. The vulnerability ste...