Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Zyxel | USG/ZyWALL series firmware | 4.09 through 4.71 | — |
| Zyxel | USG FLEX series firmware | 4.50 through 5.21 | — |
| Zyxel | ATP series firmware | 4.32 through 5.21 | — |
| Zyxel | VPN series firmware | 4.30 through 5.21 | — |
| Zyxel | NSG series firmware | 1.00 through 1.33 Patch 4 | — |
| Zyxel | NXC2500 firmware | <= 6.10(AAIG.3) | — |
| Zyxel | NAP203 firmware | <= 6.25(ABFA.7) | — |
| Zyxel | NWA50AX firmware | <= 6.25(ABYW.5) | — |
| Zyxel | WAC500 firmware | <= 6.30(ABVS.2) | — |
| Zyxel | WAX510D firmware | <= 6.30(ABTF.2) | — |
References
- https://www.zyxel.com/support/multiple-vulnerabilities-of-firewalls-AP-controllers-and-APs.shtml
- 20220610 HNS-2022-02 - HN Security Advisory - Multiple vulnerabilities in Zyxel zysh mailing-list
- 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