CVE-2023-22915

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2023-22915
A buffer overflow vulnerability in the “fbwifi_forward.cgi” CGI program of Zyxel USG FLEX series firmware versions 4.50 through 5.35, USG FLEX 50(W) firmware versions 4.30 through 5.35, USG20(W)-VPN firmware versions 4.30 through 5.35, and VPN series firmware versions 4.30 through 5.35, which could allow a remote unauthenticated attacker to cause DoS conditions by sending a crafted HTTP request if the Facebook WiFi function were enabled on an affected device.

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-of-firewalls-and-aps Vendor Advisory
Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:zyxel:usg_flex_100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_100:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND
cpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_100w:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND
cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_200:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND
cpe:2.3:o:zyxel:usg_flex_50_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_50:-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND
cpe:2.3:o:zyxel:usg_flex_50w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_50w:-:*:*:*:*:*:*:*

Configuration 6 (hide)

AND
cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_500:-:*:*:*:*:*:*:*

Configuration 7 (hide)

AND
cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_700:-:*:*:*:*:*:*:*

Configuration 8 (hide)

AND
cpe:2.3:o:zyxel:vpn100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:vpn100:-:*:*:*:*:*:*:*

Configuration 9 (hide)

AND
cpe:2.3:o:zyxel:vpn1000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:vpn1000:-:*:*:*:*:*:*:*

Configuration 10 (hide)

AND
cpe:2.3:o:zyxel:vpn300_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:vpn300:-:*:*:*:*:*:*:*

Configuration 11 (hide)

AND
cpe:2.3:o:zyxel:vpn50_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:vpn50:-:*:*:*:*:*:*:*

Configuration 12 (hide)

AND
cpe:2.3:o:zyxel:usg_20w-vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_20w-vpn:-:*:*:*:*:*:*:*
History

04 May 2023, 14:44

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.5
References (CONFIRM) https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-of-firewalls-and-aps - (CONFIRM) https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-of-firewalls-and-aps - Vendor Advisory
First Time Zyxel usg Flex 700
Zyxel vpn300
Zyxel vpn1000
Zyxel vpn1000 Firmware
Zyxel vpn50 Firmware
Zyxel usg Flex 50w Firmware
Zyxel usg Flex 200 Firmware
Zyxel vpn100
Zyxel vpn50
Zyxel vpn100 Firmware
Zyxel usg 20w-vpn Firmware
Zyxel
Zyxel vpn300 Firmware
Zyxel usg Flex 100w
Zyxel usg Flex 200
Zyxel usg Flex 50
Zyxel usg 20w-vpn
Zyxel usg Flex 50w
Zyxel usg Flex 500 Firmware
Zyxel usg Flex 50 Firmware
Zyxel usg Flex 100w Firmware
Zyxel usg Flex 500
Zyxel usg Flex 700 Firmware
Zyxel usg Flex 100
Zyxel usg Flex 100 Firmware
CPE cpe:2.3:h:zyxel:usg_flex_700:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_100:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_100w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_50w:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:vpn1000_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_20w-vpn:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:vpn50_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_200:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:vpn100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:vpn300_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_500:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:vpn1000:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:vpn300:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_100w:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_50_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_20w-vpn_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_700_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_500_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:vpn50:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_200_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:usg_flex_50w_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:vpn100:-:*:*:*:*:*:*:*
cpe:2.3:h:zyxel:usg_flex_50:-:*:*:*:*:*:*:*
CWE CWE-120

24 Apr 2023, 17:43

Type Values Removed Values Added
New CVE
Information

Published : 2023-04-24 17:15

Updated : 2023-12-10 15:01

NVD link : CVE-2023-22915

Mitre link : CVE-2023-22915

CVE.ORG link : CVE-2023-22915

JSON object : View

Products Affected

zyxel

  • usg_flex_500
  • usg_flex_100
  • usg_flex_50w
  • usg_flex_50_firmware
  • usg_flex_200_firmware
  • usg_flex_100w
  • usg_20w-vpn_firmware
  • vpn300_firmware
  • usg_flex_700_firmware
  • vpn50
  • vpn100
  • vpn300
  • vpn1000_firmware
  • usg_flex_200
  • usg_flex_100_firmware
  • usg_flex_100w_firmware
  • usg_flex_50w_firmware
  • vpn50_firmware
  • usg_flex_50
  • usg_flex_500_firmware
  • vpn100_firmware
  • vpn1000
  • usg_flex_700
  • usg_20w-vpn
CWE
CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')