Vulnerability Name:

CVE-2021-22919 (CCN-205705)

Assigned:2021-07-19
Published:2021-07-19
Updated:2021-08-16
Summary:A vulnerability has been discovered in Citrix ADC (formerly known as NetScaler ADC) and Citrix Gateway (formerly known as NetScaler Gateway), and Citrix SD-WAN WANOP Edition models 4000-WO, 4100-WO, 5000-WO, and 5100-WO. These vulnerabilities, if exploited, could lead to the limited available disk space on the appliances being fully consumed.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: 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)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (CCN Temporal CVSS v3.1 Vector: 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)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-770
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-22919

Source: XF
Type: UNKNOWN
citrix-cve202122919-dos(205705)

Source: CCN
Type: CTX319135
Citrix Application Delivery Controller, Citrix Gateway, and Citrix SD-WAN WANOP Edition appliance Security Update

Source: MISC
Type: Vendor Advisory
https://support.citrix.com/article/CTX319135

Vulnerable Configuration:Configuration 1:
  • cpe:/o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:* (Version >= 11.1 and < 11.1-65.22)
  • OR cpe:/o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:* (Version >= 12.1 and < 12.1-62.27)
  • OR cpe:/o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:* (Version >= 13.0 and < 13.0-82.45)
  • AND
  • cpe:/h:citrix:application_delivery_controller:-:*:*:*:*:*:*:*

    • Configuration 2:
  • cpe:/o:citrix:application_delivery_controller_firmware:*:*:*:*:*:*:*:* (Version >= 12.1 and < 12.1-55.238)
  • AND
  • cpe:/h:citrix:mpx/sdx_14030_fips:-:*:*:*:*:*:*:*
  • OR cpe:/h:citrix:mpx/sdx_14060_fips:-:*:*:*:*:*:*:*
  • OR cpe:/h:citrix:mpx/sdx_14080_fips:-:*:*:*:*:*:*:*
  • OR cpe:/h:citrix:mpx_15030-50g_fips:-:*:*:*:*:*:*:*
  • OR cpe:/h:citrix:mpx_15040-50g_fips:-:*:*:*:*:*:*:*
  • OR cpe:/h:citrix:mpx_15060-50g_fips:-:*:*:*:*:*:*:*
  • OR cpe:/h:citrix:mpx_15080-50g_fips:-:*:*:*:*:*:*:*
  • OR cpe:/h:citrix:mpx_15100-50g_fips:-:*:*:*:*:*:*:*
  • OR cpe:/h:citrix:mpx_15120-50g_fips:-:*:*:*:*:*:*:*
  • OR cpe:/h:citrix:mpx_8905_fips:-:*:*:*:*:*:*:*
  • OR cpe:/h:citrix:mpx_8910_fips:-:*:*:*:*:*:*:*
  • OR cpe:/h:citrix:mpx_8920_fips:-:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/a:citrix:gateway:*:*:*:*:*:*:*:* (Version >= 12.1 and < 12.1-62.27)
  • OR cpe:/a:citrix:gateway:*:*:*:*:*:*:*:* (Version >= 13.0 and < 13.0-82.45)
  • OR cpe:/a:citrix:netscaler_gateway:*:*:*:*:*:*:*:* (Version >= 11.1 and < 11.1-65.22)

    • Configuration 4:
  • cpe:/o:citrix:sd-wan_wanop:*:*:*:*:*:*:*:* (Version >= 10.2 and < 10.2.9.b)
  • OR cpe:/o:citrix:sd-wan_wanop:*:*:*:*:*:*:*:* (Version >= 11.2 and < 11.2.3.b)
  • OR cpe:/o:citrix:sd-wan_wanop:*:*:*:*:*:*:*:* (Version >= 11.3 and < 11.3.2.a)
  • OR cpe:/o:citrix:sd-wan_wanop:*:*:*:*:*:*:*:* (Version >= 11.4 and < 11.4.0.a)
  • AND
  • cpe:/h:citrix:4000-wo:-:*:*:*:*:*:*:*
  • OR cpe:/h:citrix:4100-wo:-:*:*:*:*:*:*:*
  • OR cpe:/h:citrix:5000-wo:-:*:*:*:*:*:*:*
  • OR cpe:/h:citrix:5100-wo:-:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/o:citrix:gateway_firmware:11.1:*:*:*:*:*:*:*
  • OR cpe:/o:citrix:gateway_firmware:12.1:*:*:*:*:*:*:*
  • OR cpe:/o:citrix:gateway_firmware:13.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    citrix application delivery controller firmware *
    citrix application delivery controller firmware *
    citrix application delivery controller firmware *
    citrix application delivery controller -
    citrix application delivery controller firmware *
    citrix mpx/sdx 14030 fips -
    citrix mpx/sdx 14060 fips -
    citrix mpx/sdx 14080 fips -
    citrix mpx 15030-50g fips -
    citrix mpx 15040-50g fips -
    citrix mpx 15060-50g fips -
    citrix mpx 15080-50g fips -
    citrix mpx 15100-50g fips -
    citrix mpx 15120-50g fips -
    citrix mpx 8905 fips -
    citrix mpx 8910 fips -
    citrix mpx 8920 fips -
    citrix gateway *
    citrix gateway *
    citrix netscaler gateway *
    citrix sd-wan wanop *
    citrix sd-wan wanop *
    citrix sd-wan wanop *
    citrix sd-wan wanop *
    citrix 4000-wo -
    citrix 4100-wo -
    citrix 5000-wo -
    citrix 5100-wo -
    citrix gateway firmware 11.1
    citrix gateway firmware 12.1
    citrix gateway firmware 13.0