Zero-day vulnerability in eScan

Cleartext transmission of sensitive information

Known malware:

GuptiMiner

Vulnerability details

Advisory: SB2024042410 - MitM attack in MicroWorld Technologies eScan

Vulnerable component: eScan

CVE-ID:

CVSSv3 score: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-319 - Cleartext Transmission of Sensitive Information

Description:

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to software uses insecure communication channel within the software update functionality. A remote attacker with ability to intercept network traffic can perform MitM attack during software update and swap the update package with malicious files.

Note, the vulnerability is being actively exploited in the wild.

External links:

https://decoded.avast.io/janrubin/guptiminer-hijacking-antivirus-updates-for-distributing-backdoors-and-casual-mining/

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.