Response Guide

Warning Against Cisco IOS XE Software Web UI Vulnerabilities (CVE-2023-20198, CVE-2023-20273)

Overview This month, Cisco released a security advisory regarding two vulnerabilities currently being actively exploited in actual attacks: CVE-2023-20198 and CVE-2023-20273. These vulnerabilities are present in the web UI feature of Cisco IOS XE Software. The CVE-2023-20198 vulnerability allows an unauthorized threat actor to create an arbitrary account with level 15 privileges, which is the highest level of access permission possible, and take control over the system. The CVE-2023-20273 vulnerability allows command injection which enables malicious content to be written…

Caution When Using 3CX DesktopApp (CVE-2023-29059)

Overview Details about how supply chains were attacked through the 3CX DesktopApp were published. [1] This software provides users with various communication functions, such as voice calls and video conferences, and can be operated on both Windows and MAC operating systems. Currently, the 3CX company is preparing to issue a new certificate, and until then, they are instructing users to use an alternative software. Description Regarding this, the distributed malware are confirmed to include modules that perform malicious functions and are…

Initech Product (INISAFE CrossWEB) Security Update Recommendation

Overview A security update to patch the vulnerability of Initech’s INISAFE CrossWeb EX V3 has been announced. INISAFE CrossWeb EX V3 is a software program used for electronic financial transactions and financial security certification in the public sector. It is used by various companies and individuals for Internet banking, so it is essential for most users to check if the program is installed on their PC and update it to the latest version following the guide below. Description AhnLab Security…

Microsoft Office Outlook Vulnerability (CVE-2023-23397) Appearance and Manual Measure Guide

AhnLab Security Emergency response Center (ASEC) recently published a notice about a Microsoft Office Outlook vulnerability. CVE-2023-23397 is a vulnerability that leaks a user’s account credentials upon receiving an email and triggering a notification. The stolen information includes the ‘NTLM’ hash value, which contains the password hashing information for the logged-in account. Threat actors can exploit this information for internal propagation and further compromise of the system. The application of security patches is essential to prevent the exposure of vulnerabilities,…

Warning for MagicLine4NX (Certificate Solution) Vulnerability and Update Recommended

Vulnerable Software and Overview MagicLine4NX is a non-ActiveX joint certificate program developed by the Korean company, Dream Security. Users can use MagicLine4NX to perform logins with a joint certificate and digitally sign transactions. This program is registered as a Startup Program and will be relaunched by a certain service (MagicLine4NXServices.exe) even if it is terminated. It remains constantly active as a process once it is installed, so it can be exposed to vulnerability attacks. Thus, it needs to be updated…