Security News

A proof-of-concept exploit is released for the 'Citrix Bleed' vulnerability, tracked as CVE-2023-4966, that allows attackers to retrieve authentication session cookies from vulnerable Citrix NetScaler ADC and NetScaler Gateway appliances. The CVE-2023-4966 Citrix Bleed flaw is an unauthenticated buffer-related vulnerability affecting Citrix NetScaler ADC and NetScaler Gateway, network devices used for load balancing, firewall implementation, traffic management, VPN, and user authentication.

The threat actor known as Winter Vivern has been observed exploiting a zero-day flaw in Roundcube webmail software on October 11, 2023, to harvest email messages from victims' accounts. "Winter...

Several state and key industrial organizations in Russia were attacked with a custom Go-based backdoor that performs data theft, likely aiding espionage operations. Kaspersky first detected the campaign in June 2023, while in mid-August, the cybersecurity firm spotted a newer version of the backdoor that introduced better evasion, indicating ongoing optimization of the attacks.

The District of Columbia Board of Elections says that a threat actor who breached a web server operated by the DataNet Systems hosting provider in early October may have obtained access to the personal information of all registered voters. The entire voter roll that may have been exposed contains a wide range of personally identifiable information, including driver's license numbers, dates of birth, partial social security numbers, and contact information such as phone numbers and email addresses.

The number of Cisco IOS XE devices detected with a malicious backdoor implant has plummeted from over 50,000 impacted devices to only a few hundred after the attackers updated the backdoor to hide infected systems from scans. This week, Cisco warned that hackers exploited two zero-day vulnerabilities, CVE-2023-20198 and CVE-2023-20273, to hack over 50,000 Cisco IOS XE devices to create privileged user accounts and install a malicious LUA backdoor implant.

A new sophisticated threat tracked as 'TetrisPhantom' has been using compromised secure USB drives to target government systems in the Asia-Pacific region. Secure USB drives store files in an encrypted part of the device and are used to safely transfer data between systems, including those in an air-gapped environment.

Attacks leveraging the DarkGate commodity malware targeting entities in the U.K., the U.S., and India have been linked to Vietnamese actors associated with the use of the infamous Ducktail...

State-sponsored North Korean hackers have significantly intensified their focus on the IT sector in recent years, by infiltrating firms developing software and companies lookind for IT workers. "In past operations, Diamond Sleet and other North Korean threat actors have successfully carried out software supply chain attacks by infiltrating build environments," Microsoft noted.

The Iranian hacking group tracked as MuddyWater breached at least twelve computers belonging to a Middle Eastern government network and maintained access for eight months between February and September 2023. The attacks observed by Symantec began on February 1, 2023, and utilize a wide assortment of malware, tools, and malicious activity that lasted for 8 months.

Microsoft says that the North Korean Lazarus and Andariel hacking groups are exploiting the CVE-2023-42793 flaw in TeamCity servers to deploy backdoor malware, likely to conduct software supply chain attacks. In September, TeamCity fixed a critical 9.8/10 vulnerability tracked as CVE-2023-42793 that allowed unauthenticated attackers to remotely execute code.