CVE-2021-29447

CVSS V2 Medium 4 CVSS V3 Medium 6.5
Description
Wordpress is an open source CMS. A user with the ability to upload files (like an Author) can exploit an XML parsing issue in the Media Library leading to XXE attacks. This requires WordPress installation to be using PHP 8. Access to internal files is possible in a successful XXE attack. This has been patched in WordPress version 5.7.1, along with the older affected versions via a minor release. We strongly recommend you keep auto-updates enabled.
Overview
  • CVE ID
  • CVE-2021-29447
  • Assigner
  • security-advisories@github.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-04-15T21:15:17
  • Last Modified Date
  • 2022-10-27T23:06:11
Weakness Enumerations
CWE URL
CWE-611 http://cwe.mitre.org/data/definitions/611.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:* 1 OR 5.6.0 5.7.1
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:S/C:P/I:N/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 4
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • NONE
  • Base Score
  • 6.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
http://packetstormsecurity.com/files/163148/XML-External-Entity-Via-MP3-File-Upload-On-WordPress.html Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/164198/WordPress-5.7-Media-Library-XML-Injection.html Exploit Third Party Advisory VDB Entry
https://blog.sonarsource.com/wordpress-xxe-security-vulnerability/ Exploit Third Party Advisory
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-rv47-pc52-qrhh Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00017.html Mailing List Third Party Advisory
https://wordpress.org/news/category/security/ Release Notes Vendor Advisory
https://www.debian.org/security/2021/dsa-4896 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-29447
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29447
History
Created Old Value New Value Data Type Notes
2022-05-10 06:40:52 Added to TrackCVE
2022-12-06 02:02:40 2021-04-15T21:15Z 2021-04-15T21:15:17 CVE Published Date updated
2022-12-06 02:02:40 2022-10-27T23:06:11 CVE Modified Date updated
2022-12-06 02:02:40 Analyzed Vulnerability Status updated
2022-12-06 02:02:44 References updated