Vulnerability Name:

CVE-2021-20440 (CCN-196536)

Assigned:2020-12-17
Published:2021-03-14
Updated:2021-03-17
Summary:IBM API Connect 10.0.0.0, and 2018.4.1.0 through 2018.4.1.13 does not restrict member registration to the intended recepient. An attacker who is a valid user in the user registry used by API Manager can use a stolen invitation link and register themselves as a member of an API provider organization. IBM X-Force ID: 196536.
CVSS v3 Severity:4.3 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N)
3.8 Low (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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): None
Integrity (I): Low
Availibility (A): None
6.4 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L)
5.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:4.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
6.1 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:S/C:C/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Type:CWE-noinfo
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2021-20440

Source: XF
Type: UNKNOWN
ibm-api-cve202120440-info-disc(196536)

Source: XF
Type: VDB Entry, Vendor Advisory
ibm-api-cve202120440-info-disc (196536)

Source: CCN
Type: IBM Security Bulletin 6430107 (API Connect)
IBM API Connect's API Manager is vulnerable to invitation and registration link tampering (CVE-2021-20440)

Source: CONFIRM
Type: Vendor Advisory
https://www.ibm.com/support/pages/node/6430107

Vulnerable Configuration:Configuration 1:
  • cpe:/a:ibm:api_connect:10.0.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:api_connect:*:*:*:*:*:*:*:* (Version >= 2018.4.1.0 and <= 2018.4.1.13)

    • Configuration CCN 1:
  • cpe:/a:ibm:api_connect:2018.4.1.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:api_connect:2018.4.1.13:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:api_connect:10.0.0.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    ibm api connect 10.0.0.0
    ibm api connect *
    ibm api connect 2018.4.1.0
    ibm api connect 2018.4.1.13
    ibm api connect 10.0.0.0