Vulnerability Name:

CVE-2021-34706 (CCN-210828)

Assigned:2021-10-06
Published:2021-10-06
Updated:2021-10-14
Summary:A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to access sensitive information or conduct a server-side request forgery (SSRF) attack through an affected device. This vulnerability is due to improper handling of XML External Entity (XXE) entries when parsing certain XML files. An attacker could exploit this vulnerability by uploading a crafted XML file that contains references to external entities. A successful exploit could allow the attacker to retrieve files from the local system, resulting in the disclosure of sensitive information, or cause the web application to perform arbitrary HTTP requests on behalf of the attacker.
CVSS v3 Severity:5.4 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N)
4.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): None
6.4 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N)
5.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:5.5 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): None
5.5 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-611
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2021-34706

Source: XF
Type: UNKNOWN
cisco-cve202134706-info-disc(210828)

Source: CCN
Type: Cisco Security Advisory cisco-sa-ise-xxe-inj-V4VSjEsX
Cisco Identity Services Engine XML External Entity Injection Vulnerability

Source: CISCO
Type: Vendor Advisory
20211006 Cisco Identity Services Engine XML External Entity Injection Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/a:cisco:identity_services_engine:*:*:*:*:*:*:*:* (Version <= 3.1)
  • OR cpe:/a:cisco:identity_services_engine:3.1(0.518):*:*:*:*:*:*:*
  • OR cpe:/a:cisco:identity_services_engine:3.2(0.149):*:*:*:*:*:*:*

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

    • * Denotes that component is vulnerable
    BACK
    cisco identity services engine *
    cisco identity services engine 3.1(0.518)
    cisco identity services engine 3.2(0.149)
    cisco identity services engine -