Multiple vulnerabilities in Zyxel firewalls and APs
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2023-6397 CVE-2023-6399 CVE-2023-6764 CVE-2023-6398 |
| CWE-ID | CWE-476 CWE-134 CWE-78 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
ATP series Hardware solutions / Routers for home users USG FLEX series Client/Desktop applications / Antivirus software/Personal firewalls USG FLEX 50W Hardware solutions / Firmware USG20W-VPN Hardware solutions / Firmware NWA110AX Hardware solutions / Firmware NWA210AX Hardware solutions / Firmware NWA1123ACv3 Hardware solutions / Firmware WAC500 Hardware solutions / Firmware WAC500H Hardware solutions / Firmware WAX510D Hardware solutions / Firmware WAX610D Hardware solutions / Firmware WAX650S Hardware solutions / Firmware NWA50AX-PRO Hardware solutions / Routers & switches, VoIP, GSM, etc NWA90AX-PRO Hardware solutions / Routers & switches, VoIP, GSM, etc NWA50AX Hardware solutions / Routers & switches, VoIP, GSM, etc NWA55AXE Hardware solutions / Routers & switches, VoIP, GSM, etc NWA90AX Hardware solutions / Routers & switches, VoIP, GSM, etc NWA220AX-6E Hardware solutions / Routers & switches, VoIP, GSM, etc WAX300H Hardware solutions / Routers & switches, VoIP, GSM, etc WAX620D-6E Hardware solutions / Routers & switches, VoIP, GSM, etc WAX630S Hardware solutions / Routers & switches, VoIP, GSM, etc WAX640S-6E Hardware solutions / Routers & switches, VoIP, GSM, etc WAX655E Hardware solutions / Routers & switches, VoIP, GSM, etc WBE660S Hardware solutions / Routers & switches, VoIP, GSM, etc |
| Vendor | ZyXEL Communications Corp. |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) NULL pointer dereference
EUVDB-ID: #VU86610
Risk: Low
CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2023-6397
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote attacker on the local network can use a specially crafted RAR compressed file and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsATP series: 4.32 - 5.37 Patch 1
USG FLEX series: 4.50 - 5.37 Patch 1
CPE2.3- cpe:2.3:h:zyxel_communications_corp:atp_series:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:atp_series:4.32:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:atp_series:5.37:Patch 1:*:*:*:*:*:*
- cpe:2.3:a:zyxel_communications_corp:usg_flex_series:*:*:*:*:*:*:*:*
- cpe:2.3:a:zyxel_communications_corp:usg_flex_series:4.50:*:*:*:*:*:*:*
- cpe:2.3:a:zyxel_communications_corp:usg_flex_series:5.37:Patch 1:*:*:*:*:*:*
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Format string error
EUVDB-ID: #VU86615
Risk: Low
CVSSv4.0: 4.6 [CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2023-6399
CWE-ID:
CWE-134 - Use of Externally-Controlled Format String
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a format string error. A remote user on the local network can supply a specially crafted input that contains format string specifiers and cause a denial of service condition on the target system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsATP series: 5.10 - 5.37 Patch 1
USG FLEX series: 5.10 - 5.37 Patch 1
USG FLEX 50W: 5.10 - 5.37 Patch 1
USG20W-VPN: 5.10 - 5.37 Patch 1
CPE2.3- cpe:2.3:h:zyxel_communications_corp:atp_series:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:atp_series:5.10:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:atp_series:5.37:Patch 1:*:*:*:*:*:*
- cpe:2.3:a:zyxel_communications_corp:usg_flex_series:*:*:*:*:*:*:*:*
- cpe:2.3:a:zyxel_communications_corp:usg_flex_series:5.10:*:*:*:*:*:*:*
- cpe:2.3:a:zyxel_communications_corp:usg_flex_series:5.37:Patch 1:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:usg_flex_50w:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:usg_flex_50w:5.10:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:usg_flex_50w:5.37:Patch 1:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:usg20w-vpn:*:*:*:*:*:*:*:*
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Format string error
EUVDB-ID: #VU86619
Risk: High
CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2023-6764
CWE-ID:
CWE-134 - Use of Externally-Controlled Format String
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a format string error in a function of the IPSec VPN feature. A remote attacker can supply a specially crafted input that contains format string specifiers and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsATP series: 4.32 - 5.37 Patch 1
USG FLEX series: 4.50 - 5.37 Patch 1
USG FLEX 50W: 4.16 - 5.37 Patch 1
USG20W-VPN: 4.16 - 5.37 Patch 1
CPE2.3- cpe:2.3:h:zyxel_communications_corp:atp_series:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:atp_series:4.32:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:atp_series:5.37:Patch 1:*:*:*:*:*:*
- cpe:2.3:a:zyxel_communications_corp:usg_flex_series:*:*:*:*:*:*:*:*
- cpe:2.3:a:zyxel_communications_corp:usg_flex_series:4.50:*:*:*:*:*:*:*
- cpe:2.3:a:zyxel_communications_corp:usg_flex_series:5.37:Patch 1:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:usg_flex_50w:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:usg_flex_50w:4.16:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:usg_flex_50w:5.37:Patch 1:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:usg20w-vpn:*:*:*:*:*:*:*:*
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
4) OS Command Injection
EUVDB-ID: #VU86621
Risk: Low
CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2023-6398
CWE-ID:
CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Exploit availability: No
DescriptionThe vulnerability allows a remote user to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation in the file upload binary. A remote administrator can pass specially crafted data to the application and execute arbitrary OS commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsATP series: 4.32 - 5.37 Patch 1
USG FLEX series: 4.50 - 5.37 Patch 1
USG FLEX 50W: 4.16 - 5.37 Patch 1
USG20W-VPN: 4.16 - 5.37 Patch 1
NWA50AX-PRO: 6.65(ACGE.1)
NWA90AX-PRO: 6.65(ACGF.1)
NWA50AX: 6.29(ABYW.3)
NWA55AXE: 6.29(ABZL.3)
NWA90AX: 6.29(ACCV.3)
NWA110AX: 6.65(ABTG.1)
NWA210AX: 6.65(ABTD.1)
NWA220AX-6E: 6.65(ACCO.1)
NWA1123ACv3: 6.65(ABVT.1)
WAC500: 6.65(ABVS.1)
WAC500H: 6.65(ABWA.1)
WAX300H: 6.60(ACHF.1)
WAX510D: 6.65(ABTF.1)
WAX610D: 6.65(ABTE.1)
WAX620D-6E: 6.65(ACCN.1)
WAX630S: 6.65(ABZD.1)
WAX640S-6E: 6.65(ACCM.1)
WAX650S: 6.65(ABRM.1)
WAX655E: 6.65(ACDO.1)
WBE660S: 6.65(ACGG.1)
CPE2.3- cpe:2.3:h:zyxel_communications_corp:atp_series:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:atp_series:4.32:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:atp_series:5.37:Patch 1:*:*:*:*:*:*
- cpe:2.3:a:zyxel_communications_corp:usg_flex_series:*:*:*:*:*:*:*:*
- cpe:2.3:a:zyxel_communications_corp:usg_flex_series:4.50:*:*:*:*:*:*:*
- cpe:2.3:a:zyxel_communications_corp:usg_flex_series:5.37:Patch 1:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:usg_flex_50w:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:usg_flex_50w:4.16:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:usg_flex_50w:5.37:Patch 1:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:usg20w-vpn:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:nwa50ax-pro:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:nwa90ax-pro:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:nwa50ax:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:nwa55axe:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:nwa90ax:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:nwa110ax:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:nwa210ax:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:nwa220ax-6e:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:nwa1123acv3:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:wac500:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:wac500h:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:wax300h:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:wax510d:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:wax610d:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:wax620d-6e:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:wax630s:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:wax640s-6e:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:wax650s:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:wax655e:*:*:*:*:*:*:*:*
- cpe:2.3:h:zyxel_communications_corp:wbe660s:*:*:*:*:*:*:*:*
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
