Vulnerability Name:

CVE-2021-44223 (CCN-214109)

Assigned:2021-11-25
Published:2021-11-25
Updated:2021-11-30
Summary:WordPress before 5.8 lacks support for the Update URI plugin header. This makes it easier for remote attackers to execute arbitrary code via a supply-chain attack against WordPress installations that use any plugin for which the slug satisfies the naming constraints of the WordPress.org Plugin Directory but is not yet present in that directory.
CVSS v3 Severity:9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/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): High
Integrity (I): High
Availibility (A): High
9.8 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/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): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
10.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-Other
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-44223

Source: XF
Type: UNKNOWN
wp-core-cve202144223-code-exec(214109)

Source: MISC
Type: Release Notes, Vendor Advisory
https://make.wordpress.org/core/2021/06/29/introducing-update-uri-plugin-header-in-wordpress-5-8/

Source: CCN
Type: vavkamil Web site
WordPress Plugin Confusion: How an update can get you pwned

Source: MISC
Type: Exploit, Third Party Advisory
https://vavkamil.cz/2021/11/25/wordpress-plugin-confusion-update-can-get-you-pwned/

Source: CCN
Type: WordPress Web site
WordPress

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2021-44223

Vulnerable Configuration:Configuration 1:
  • cpe:/a:wordpress:wordpress:*:*:*:*:*:*:*:* (Version < 5.8)

    • Configuration CCN 1:
  • cpe:/a:wordpress:wordpress:5.7.2:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    wordpress wordpress *
    wordpress wordpress 5.7.2