Find attached a security advisory that details multiple
vulnerabilities we discovered in the zysh shell distributed with some
Zyxel products, including their security appliances.
* Title: Multiple vulnerabilities in Zyxel zysh
* Products: Zyxel firewalls, AP controllers, and APs
* Author: Marco Ivaldi <marco.ivaldi () hnsecurity it>
* Date: 2022-06-07
* CVE Names and Vendor CVSS Scores:
CVE-2022-26531:…
Threat: Trojan-Banker.Win32.Banbra.cyt
Vulnerability: Insecure Permissions
Description: The malware writes a batch script “.bat” file to c drive
granting change (C) permissions to the authenticated user group. Standard
users can…
Threat: Backdoor.Win32.Cabrotor.10.d
Vulnerability: Unauthenticated Remote Command Execution
Description: The malware listens on TCP port 1243. Attackers who can reach
infected systems can issue commands made up of single characters E.g….
Threat: Trojan-Proxy.Win32.Symbab.o
Vulnerability: Heap Corruption
Description: The malware listens on TCP port 8080. Attackers who can reach
an infected system can send a corrupt HTTP request for the “redirecturl”
parameter causing…
Threat: Trojan-Banker.Win32.Banker.agzg
Vulnerability: Insecure Permissions
Description: The malware writes a PE file to c drive granting change (C)
permissions to the authenticated user group. Standard users can rename the
executable dropped…
Threat: Ransom.Haron
Vulnerability: Code Execution
Description: Haron looks for and executes DLLs in its current directory.
Therefore, we can potentially hijack a vuln DLL execute our own code,
control and terminate the malware pre-encryption….
