CVE-2022-26531 – Zyxel zysh Format String Proof Of Concept

https://notcve.org/view.php?id=CVE-2022-26531

Multiple improper input validation flaws were identified in some CLI commands of Zyxel USG/ZyWALL series firmware versions 4.09 through 4.71, USG FLEX series firmware versions 4.50 through 5.21, ATP series firmware versions 4.32 through 5.21, VPN series firmware versions 4.30 through 5.21, NSG series firmware versions 1.00 through 1.33 Patch 4, NXC2500 firmware version 6.10(AAIG.3) and earlier versions, NAP203 firmware version 6.25(ABFA.7) and earlier versions, NWA50AX firmware version 6.25(ABYW.5) and earlier versions, WAC500 firmware version 6.30(ABVS.2) and earlier versions, and WAX510D firmware version 6.30(ABTF.2) and earlier versions, that could allow a local authenticated attacker to cause a buffer overflow or a system crash via a crafted payload. Se han identificado varios fallos de comprobación de entrada inadecuados en algunos comandos CLI de las Zyxel USG/ZyWALL versiones de firmware 4.09 hasta 4.71, USG FLEX series versiones de firmware 4.50 hasta 5.21, ATP series versiones de firmware 4.32 hasta 5.21, VPN series versiones de firmware 4.30 a 5.21, NSG series versiones de firmware1.00 hasta 1.33 Patch 4, NXC2500 versión de firmware 6.10(AAIG.3 ) y versiones anteriores, el firmware NAP203 versión 6.25(ABFA.7) y versiones anteriores, NWA50AX versión de firmware 6.25(ABYW.5) y versiones anteriores, WAC500 versión de firmware 6.30(ABVS.2) y versiones anteriores, WAX510D versión de firmware 6.30(ABTF.2) y versiones anteriores, que podría permitir a un atacante local autenticado causar un desbordamiento del búfer o un bloqueo del sistema por medio de una carga útil diseñada Zyxel firewalls, AP controllers, and APs suffer from buffer overflow, format string, and command injection vulnerabilities. • http://packetstormsecurity.com/files/167464/Zyxel-Buffer-Overflow-Format-String-Command-Injection.html http://packetstormsecurity.com/files/177036/Zyxel-zysh-Format-String-Proof-Of-Concept.html http://seclists.org/fulldisclosure/2022/Jun/15 https://www.zyxel.com/support/multiple-vulnerabilities-of-firewalls-AP-controllers-and-APs.shtml • CWE-20: Improper Input Validation •