Vulnerability Name:

CVE-2021-21993 (CCN-209750)

Assigned:2021-09-21
Published:2021-09-21
Updated:2021-09-27
Summary:The vCenter Server contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in vCenter Server Content Library. An authorised user with access to content library may exploit this issue by sending a POST request to vCenter Server leading to information disclosure.
CVSS v3 Severity:6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
5.7 Medium (Temporal CVSS v3.1 Vector: 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)
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): High
Integrity (I): None
Availibility (A): None
4.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)
3.8 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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): None
Availibility (A): None
CVSS v2 Severity:4.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
4.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
Vulnerability Type:CWE-918
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-21993

Source: XF
Type: UNKNOWN
vmware-cve202121993-ssrf(209750)

Source: CCN
Type: IBM Security Bulletin 6507111 (Cloud Pak System)
Multiple Vulnerabilities in VMware vCenter affect IBM Cloud Pak System

Source: CCN
Type: VMware Security Advisory VMSA-2021-0020
VMware vCenter Server updates address multiple security vulnerabilities

Source: MISC
Type: Patch, Vendor Advisory
https://www.vmware.com/security/advisories/VMSA-2021-0020.html

Vulnerable Configuration:Configuration 1:
  • cpe:/a:vmware:cloud_foundation:*:*:*:*:*:*:*:* (Version >= 3.0 and < 5.0)
  • OR cpe:/a:vmware:vcenter_server:6.5:-:*:*:*:*:*:*
  • OR cpe:/a:vmware:vcenter_server:6.7:-:*:*:*:*:*:*
  • OR cpe:/a:vmware:vcenter_server:7.0:-:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:vmware:vcenter_server:6.5:*:*:*:*:*:*:*
  • OR cpe:/a:vmware:vcenter_server:6.7:*:*:*:*:*:*:*
  • OR cpe:/a:vmware:cloud_foundation:3.0:*:*:*:*:*:*:*
  • OR cpe:/a:vmware:cloud_foundation:4.0:*:*:*:*:*:*:*
  • OR cpe:/a:vmware:vcenter_server:7.0:-:*:*:*:*:*:*
  • AND
  • cpe:/a:ibm:cloud_pak_system:2.3:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_pak_system:2.3.0.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_pak_system:2.3.1.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_pak_system:2.3.2.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_pak_system:2.3.3.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_pak_system:2.3.3.1:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_pak_system:2.3.3.2:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_pak_system:2.3.3.3:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    vmware cloud foundation *
    vmware vcenter server 6.5 -
    vmware vcenter server 6.7 -
    vmware vcenter server 7.0 -
    vmware vcenter server 6.5
    vmware vcenter server 6.7
    vmware cloud foundation 3.0
    vmware cloud foundation 4.0
    vmware vcenter server 7.0 -
    ibm cloud pak system 2.3
    ibm cloud pak system 2.3.0.1
    ibm cloud pak system 2.3.1.1
    ibm cloud pak system 2.3.2.0
    ibm cloud pak system 2.3.3.0
    ibm cloud pak system 2.3.3.1
    ibm cloud pak system 2.3.3.2
    ibm cloud pak system 2.3.3.3