Multiple vulnerabilitiesin Zyxel firewalls and APs
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 6 |
| CVE-ID | CVE-2023-22913 CVE-2023-22914 CVE-2023-22915 CVE-2023-22916 CVE-2023-22917 CVE-2023-22918 |
| CWE-ID | CWE-77 CWE-22 CWE-119 CWE-20 CWE-200 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
USG FLEX series Client/Desktop applications / Antivirus software/Personal firewalls VPN series Client/Desktop applications / Antivirus software/Personal firewalls USG FLEX 50W Hardware solutions / Firmware USG20W-VPN Hardware solutions / Firmware NWA5123-AC HD Hardware solutions / Firmware WAC5302D-Sv2 Hardware solutions / Firmware WAC6103D-I Hardware solutions / Firmware WAC6303D-S Hardware solutions / Firmware WAC6502D-E Hardware solutions / Firmware WAC6502D-S Hardware solutions / Firmware WAC6503D-S Hardware solutions / Firmware WAC6552D-S Hardware solutions / Firmware WAC6553D-E Hardware solutions / Firmware NWA110AX Hardware solutions / Firmware NWA1123ACv3 Hardware solutions / Firmware NWA210AX Hardware solutions / Firmware WAC500 Hardware solutions / Firmware WAC500H Hardware solutions / Firmware WAX510D Hardware solutions / Firmware WAX610D Hardware solutions / Firmware WAX650S Hardware solutions / Firmware ATP series Hardware solutions / Routers for home users NAP203 Hardware solutions / Routers & switches, VoIP, GSM, etc NAP303 Hardware solutions / Routers & switches, VoIP, GSM, etc NAP353 Hardware solutions / Routers & switches, VoIP, GSM, etc NWA1123-AC-PRO Hardware solutions / Routers & switches, VoIP, GSM, etc NWA220AX-6E Hardware solutions / Routers & switches, VoIP, GSM, etc NWA50AX Hardware solutions / Routers & switches, VoIP, GSM, etc NWA50AX-PRO Hardware solutions / Routers & switches, VoIP, GSM, etc NWA90AX Hardware solutions / Routers & switches, VoIP, GSM, etc NWA90AX-PRO 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 |
| Vendor | ZyXEL Communications Corp. |
Security Bulletin
This security bulletin contains information about 6 vulnerabilities.
1) Command Injection
EUVDB-ID: #VU75462
Risk: Medium
CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-22913
CWE-ID:
CWE-77 - Command injection
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary commands on the target system.
The vulnerability exists due to improper input validation in the "account_operator.cgi" CGI program. A remote user can pass specially crafted data to the application and execute arbitrary 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 versionsUSG FLEX series: 4.50 - 5.35
VPN series: 4.30 - 5.35
CPE2.3- 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:5.35:*:*:*:*:*:*:
- cpe:2.3:a:zyxel_communications_corp:vpn_series:*:*:*:*:*:*:*:
- cpe:2.3:a:zyxel_communications_corp:vpn_series:4.30:*:*:*:*:*:*:
- cpe:2.3:a:zyxel_communications_corp:vpn_series:5.35:*:*:*:*:*:*:
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Path traversal
EUVDB-ID: #VU75463
Risk: Low
CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-22914
CWE-ID:
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Exploit availability: No
DescriptionThe vulnerability allows a remote user to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences in the "account_print.cgi" CGI program. A remote administrator can send a specially crafted HTTP request and read arbitrary files on the system, leading to arbitrary OS commands execution.
MitigationInstall update from vendor's website.
Vulnerable software versionsUSG FLEX series: 4.50 - 5.35
VPN series: 4.30 - 5.35
CPE2.3- 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:5.35:*:*:*:*:*:*:
- cpe:2.3:a:zyxel_communications_corp:vpn_series:*:*:*:*:*:*:*:
- cpe:2.3:a:zyxel_communications_corp:vpn_series:4.30:*:*:*:*:*:*:
- cpe:2.3:a:zyxel_communications_corp:vpn_series:5.35:*:*:*:*:*:*:
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Buffer overflow
EUVDB-ID: #VU75464
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-22915
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in the "fbwifi_forward.cgi" CGI program. A remote attacker can send a specially crafted HTTP request, trigger memory corruption and cause a denial of service condition on the target system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsUSG FLEX series: 4.50 - 5.35
USG FLEX 50W: 4.30 - 5.35
USG20W-VPN: 4.30 - 5.35
VPN series: 4.30 - 5.35
CPE2.3- 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:5.35:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:usg_flex_50w:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:usg_flex_50w:4.30:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:usg_flex_50w:5.35:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:usg20w-vpn:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:usg20w-vpn:4.30:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:usg20w-vpn:5.35:*:*:*:*:*:*:
- cpe:2.3:a:zyxel_communications_corp:vpn_series:*:*:*:*:*:*:*:
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
4) Input validation error
EUVDB-ID: #VU75465
Risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-22916
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input in the configuration parser. A remote attacker can trick an administrator to switch the management mode to the cloud mode and perform a denial of service (DoS) attack.
MitigationInstall updates from vendor's website.
Vulnerable software versionsATP series: 5.10 - 5.35
USG FLEX series: 5.00 - 5.35
USG FLEX 50W: 5.10 - 5.35
USG20W-VPN: 5.10 - 5.35
VPN series: 5.00 - 5.35
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:5.35:*:*:*:*:*:*:
- cpe:2.3:a:zyxel_communications_corp:usg_flex_series:*:*:*:*:*:*:*:
- cpe:2.3:a:zyxel_communications_corp:usg_flex_series:5.00:*:*:*:*:*:*:
- cpe:2.3:a:zyxel_communications_corp:usg_flex_series:5.35:*:*:*:*:*:*:
- 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:5.35:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:usg20w-vpn:*:*:*:*:*:*:*:
- cpe:2.3:a:zyxel_communications_corp:vpn_series:*:*:*:*:*:*:*:
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
5) Buffer overflow
EUVDB-ID: #VU75466
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-22917
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in the "sdwan_iface_ipc" binary. A remote attacker can trigger memory corruption and cause a denial of service condition on the target system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsATP series: 5.10 - 5.35
USG FLEX series: 5.00 - 5.35
USG FLEX 50W: 5.10 - 5.35
USG20W-VPN: 5.10 - 5.35
VPN series: 5.00 - 5.35
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:5.35:*:*:*:*:*:*:
- cpe:2.3:a:zyxel_communications_corp:usg_flex_series:*:*:*:*:*:*:*:
- cpe:2.3:a:zyxel_communications_corp:usg_flex_series:5.00:*:*:*:*:*:*:
- cpe:2.3:a:zyxel_communications_corp:usg_flex_series:5.35:*:*:*:*:*:*:
- 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:5.35:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:usg20w-vpn:*:*:*:*:*:*:*:
- cpe:2.3:a:zyxel_communications_corp:vpn_series:*:*:*:*:*:*:*:
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
6) Information disclosure
EUVDB-ID: #VU75467
Risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-22918
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application in the CGI program. A remote user can gain unauthorized access to sensitive information on the system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsATP series: 4.32 - 5.35
USG FLEX series: 4.50 - 5.35
USG FLEX 50W: 4.16 - 5.35
USG20W-VPN: 4.16 - 5.35
VPN series: 4.30 - 5.35
NAP203: 6.28(ABFA.0)
NAP303: 6.28(ABEX.0)
NAP353: 6.28(ABEY.0)
NWA1123-AC-PRO: 6.28(ABHD.0)
NWA5123-AC HD: 6.25(ABIM.9)
WAC5302D-Sv2: 6.25(ABVZ.9)
WAC6103D-I: 6.28(AAXH.0)
WAC6303D-S: 6.25(ABGL.9)
WAC6502D-E: 6.28(AASD.0)
WAC6502D-S: 6.28(AASE.0)
WAC6503D-S: 6.28(AASF.0)
WAC6552D-S: 6.28(ABIO.0)
WAC6553D-E: 6.28(AASG.0)
NWA110AX: 6.50(ABTG.2)
NWA1123ACv3: 6.50(ABVT.0)
NWA210AX: 6.50(ABTD.2)
NWA220AX-6E: 6.50(ACCO.2)
NWA50AX: 6.29(ABYW.1)
NWA50AX-PRO: 6.50(ACGE.0)
NWA90AX: 6.29(ACCV.1)
NWA90AX-PRO: 6.50(ACGF.0)
WAC500: 6.50(ABVS.0)
WAC500H: 6.50(ABWA.0)
WAX510D: 6.50(ABTF.2)
WAX610D: 6.50(ABTE.2)
WAX620D-6E: 6.50(ACCN.2)
WAX630S: 6.50(ABZD.2)
WAX640S-6E: 6.50(ACCM.2)
WAX650S: 6.50(ABRM.2)
WAX655E: 6.50(ACDO.2)
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:5.35:*:*:*:*:*:*:
- 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:5.35:*:*:*:*:*:*:
- 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:5.35:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:usg20w-vpn:*:*:*:*:*:*:*:
- cpe:2.3:a:zyxel_communications_corp:vpn_series:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:nap203:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:nap303:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:nap353:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:nwa1123-ac-pro:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:nwa5123-ac_hd:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:wac5302d-sv2:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:wac6103d-i:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:wac6303d-s:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:wac6502d-e:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:wac6502d-s:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:wac6503d-s:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:wac6552d-s:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:wac6553d-e:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:nwa110ax:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:nwa1123acv3:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:nwa210ax:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:nwa220ax-6e:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:nwa50ax:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:nwa50ax-pro:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:nwa90ax:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:nwa90ax-pro:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:wac500:*:*:*:*:*:*:*:
- cpe:2.3:h:zyxel_communications_corp:wac500h:*:*:*:*:*:*:*:
- 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:*:*:*:*:*:*:*:
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
