Vulnerability CVE-2021-21973 - CERT Civis.Net

Vulnerability Name:

CVE-2021-21973 (CCN-197197)

Assigned:

2021-02-23

Published:

2021-02-23

Updated:

2021-08-24

Summary:

The vSphere Client (HTML5) contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue by sending a POST request to vCenter Server plugin leading to information disclosure. This affects: VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2).

CVSS v3 Severity:

5.3 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
4.6 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/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): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): Low Integrity (I): None Availibility (A): None

5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/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): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): Low Integrity (I): None Availibility (A): None

CVSS v2 Severity:

5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): None Availibility (A): None

5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): None Availibility (A): None

Vulnerability Type:

Vulnerability Consequences:

Obtain Information

References:

Source: MITRE
Type: CNA
CVE-2021-21973

Source: XF
Type: UNKNOWN
vmware-vcenter-cve202121973-ssrf(197197)

Source: CCN
Type: PT SWARM Web site
Unauthorized RCE in VMware vCenter

Source: CCN
Type: CYBERSECURITY & INFRASTRUCTURE SECURITY AGENCY
KNOWN EXPLOITED VULNERABILITIES CATALOG

Source: CCN
Type: IBM Security Bulletin 6485985 (Cloud Pak System)
Multiple vulnerabilities in VMware affect IBM Cloud Pak System

Source: CCN
Type: VMware Security Advisory VMSA-2021-0002
VMware ESXi and vCenter Server updates address multiple security vulnerabilities (CVE-2021-21972, CVE-2021-21973, CVE-2021-21974)

Source: CONFIRM
Type: Vendor Advisory
https://www.vmware.com/security/advisories/VMSA-2021-0002.html

Vulnerable Configuration:

Configuration 1:

cpe:/a:vmware:cloud_foundation:*:*:*:*:*:*:*:* (Version >= 3.0 and < 3.10.1.2)

OR cpe:/a:vmware:cloud_foundation:*:*:*:*:*:*:*:* (Version >= 4.0 and < 4.2)

OR cpe:/a:vmware:vcenter_server:6.5:-:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.5:a:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.5:b:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.5:c:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.5:d:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.5:e:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.5:f:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.5:update1d:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.5:update1e:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.5:update1g:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.5:update2:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.5:update2b:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.5:update2c:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.5:update2d:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.5:update2g:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.5:update3:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.5:update3d:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.5:update3f:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.5:update3k:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.7:-:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.7:a:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.7:b:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.7:d:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.7:update1:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.7:update1b:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.7:update2:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.7:update2a:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.7:update2c:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.7:update3:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.7:update3a:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.7:update3b:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.7:update3f:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.7:update3g:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.7:update3j:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:7.0:-:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:7.0:a:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:7.0:b:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:7.0:c:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:7.0:d:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:7.0:update1:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:7.0:update1a:*:*:*:*:*:*

Configuration CCN 1:

cpe:/a:vmware:vcenter_server:6.5:*:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:6.7:*:*:*:*:*:*:*

OR cpe:/a:vmware:vcenter_server:7.0:-:*:*:*:*:*:*

AND

cpe:/a:ibm:cloud_pak_system:2.3.3.0:*:*:*:*:*:*:*

OR cpe:/a:ibm:cloud_pak_system:2.3.3.3:*:*:*:*:*:*:*

OR cpe:/a:ibm:cloud_pak_system:2.3.0.0:*:*:*:*:*:*:*

Denotes that component is vulnerable