Security News

The U.S. Cybersecurity & Infrastructure Security Agency (CISA) has discovered a new backdoor malware named 'Whirlpool' used in attacks on compromised Barracuda Email Security Gateway (ESG) devices. [...]

In collaboration with CISA, the NSA, and the FBI, Five Eyes cybersecurity authorities have issued today a list of the 12 most exploited vulnerabilities throughout 2022."In 2022, malicious cyber actors exploited older software vulnerabilities more frequently than recently disclosed vulnerabilities and targeted unpatched, internet-facing systems," the joint advisory reads.

The U.S. Cybersecurity and Infrastructure Security Agency warned today of state hackers exploiting two flaws in Ivanti's Endpoint Manager Mobile, formerly MobileIron Core. "Mobile device management systems are attractive targets for threat actors because they provide elevated access to thousands of mobile devices, and APT actors have exploited a previous MobileIron vulnerability," CISA said on Tuesday.

CISA says new malware known as Submarine was used to backdoor Barracuda ESG (Email Security Gateway) appliances by exploiting a now-patched zero-day bug. [...]

CISA warned today of the significant breach risks linked to insecure direct object reference vulnerabilities impacting web applications in a joint advisory with the Australian Cyber Security Centre and U.S. National Security Agency. IDOR vulnerabilities are flaws in web apps that enable attackers to access and manipulate sensitive data by directly referencing internal objects or resources.

Ivanti has also confirmed that the bug is actively exploited in attacks and warned customers that it's critical to "Immediately take action" to ensure their systems are fully protected. U.S. Federal Civilian Executive Branch Agencies have a three-week deadline, until August 15th, to secure their devices against attacks targeting the CVE-2023-35078 flaw, which was added to CISA's list of Known Exploited Vulnerabilities on Tuesday.

The U.S. Cybersecurity and Infrastructure Security Agency has given federal agencies three weeks to secure Adobe ColdFusion servers on their networks against two critical security flaws exploited in attacks, one of them as a zero-day. According to the binding operational directive issued by CISA in November 2021, Federal Civilian Executive Branch Agencies are required to patch their systems against all bugs added to the Known Exploited Vulnerabilities catalog.

Threat actors have breached the network of a U.S. organization in the critical infrastructure sector after exploiting a zero-day RCE vulnerability currently identified as CVE-2023-3519, a critical-severity issue in NetScaler ADC and Gateway that Citrix patched this week.Because the targeted NetScaler ADC appliance was in a segregated environment on the network, the hackers were not able to move laterally to a domain controller, CISA says.

The exploitation of the Citrix NetScaler ADC zero-day vulnerability was first spotted by a critical infrastructure organization, who reported it to the Cybersecurity and Infrastructure Security Agency. "In June 2023, threat actors exploited this vulnerability as a zero-day to drop a webshell on a critical infrastructure organization's non-production environment NetScaler ADC appliance. The webshell enabled the actors to perform discovery on the victim's active directory and collect and exfiltrate AD data. The actors attempted to move laterally to a domain controller but network-segmentation controls for the appliance blocked movement," the agency shared in an advisory published on Thursday.

The U.S. Cybersecurity and Infrastructure Security Agency issued an advisory on Thursday warning that the newly disclosed critical security flaw in Citrix NetScaler Application Delivery Controller and Gateway devices is being abused to drop web shells on vulnerable systems. "In June 2023, threat actors exploited this vulnerability as a zero-day to drop a web shell on a critical infrastructure organization's non-production environment NetScaler ADC appliance," the agency said.