Vulnerability Name:

CVE-2022-20937 (CCN-239325)

Assigned:2021-11-02
Published:2022-11-02
Updated:2022-11-07
Summary:A vulnerability in a feature that monitors RADIUS requests on Cisco Identity Services Engine (ISE) Software could allow an unauthenticated, remote attacker to negatively affect the performance of an affected device. This vulnerability is due to insufficient management of system resources. An attacker could exploit this vulnerability by taking actions that cause Cisco ISE Software to receive specific RADIUS traffic. A successful and sustained exploit of this vulnerability could allow the attacker to cause reduced performance of the affected device, resulting in significant delays to RADIUS authentications. There are workarounds that address this vulnerability.
CVSS v3 Severity:5.3 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.6 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/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): Low
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.6 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:L/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): Low
CVSS v2 Severity:5.0 Medium (CCN 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
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-400
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2022-20937

Source: XF
Type: UNKNOWN
cisco-ise-cve202220937-dos(239325)

Source: CCN
Type: Cisco Security Advisory cisco-sa-ise-sec-atk-dos-zw5RCUYp
Cisco Identity Services Engine Software Resource Exhaustion Vulnerability

Source: MISC
Type: Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-sec-atk-dos-zw5RCUYp

Vulnerable Configuration:Configuration 1:
  • cpe:/a:cisco:identity_services_engine:2.7.0:patch2:*:*:*:*:*:*
  • OR cpe:/a:cisco:identity_services_engine:3.0.0:-:*:*:*:*:*:*
  • OR cpe:/a:cisco:identity_services_engine:3.0.0:patch1:*:*:*:*:*:*
  • OR cpe:/a:cisco:identity_services_engine:2.7.0:-:*:*:*:*:*:*
  • OR cpe:/a:cisco:identity_services_engine:3.1:-:*:*:*:*:*:*
  • OR cpe:/a:cisco:identity_services_engine:*:*:*:*:*:*:*:* (Version < 2.7.0)
  • OR cpe:/a:cisco:identity_services_engine:3.0.0:patch2:*:*:*:*:*:*
  • OR cpe:/a:cisco:identity_services_engine:2.7.0:patch1:*:*:*:*:*:*
  • OR cpe:/a:cisco:identity_services_engine:3.0.0:patch3:*:*:*:*:*:*
  • OR cpe:/a:cisco:identity_services_engine:3.1:patch1:*:*:*:*:*:*
  • OR cpe:/a:cisco:identity_services_engine:3.1:patch3:*:*:*:*:*:*
  • OR cpe:/a:cisco:identity_services_engine:3.0.0:patch4:*:*:*:*:*:*
  • OR cpe:/a:cisco:identity_services_engine:3.0.0:patch5:*:*:*:*:*:*
  • OR cpe:/a:cisco:identity_services_engine:2.7.0:patch3:*:*:*:*:*:*
  • OR cpe:/a:cisco:identity_services_engine:2.7.0:patch4:*:*:*:*:*:*
  • OR cpe:/a:cisco:identity_services_engine:2.7.0:patch5:*:*:*:*:*:*
  • OR cpe:/a:cisco:identity_services_engine:2.7.0:patch6:*:*:*:*:*:*
  • OR cpe:/a:cisco:identity_services_engine:2.7.0:patch7:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:cisco:identity_services_engine:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco identity services engine 2.7.0 patch2
    cisco identity services engine 3.0.0 -
    cisco identity services engine 3.0.0 patch1
    cisco identity services engine 2.7.0 -
    cisco identity services engine 3.1 -
    cisco identity services engine *
    cisco identity services engine 3.0.0 patch2
    cisco identity services engine 2.7.0 patch1
    cisco identity services engine 3.0.0 patch3
    cisco identity services engine 3.1 patch1
    cisco identity services engine 3.1 patch3
    cisco identity services engine 3.0.0 patch4
    cisco identity services engine 3.0.0 patch5
    cisco identity services engine 2.7.0 patch3
    cisco identity services engine 2.7.0 patch4
    cisco identity services engine 2.7.0 patch5
    cisco identity services engine 2.7.0 patch6
    cisco identity services engine 2.7.0 patch7
    cisco identity services engine -