1. CVE-Search
  2. CVE-2021-29447
ID CVE-2021-29447
Summary 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.
References
Vulnerable Configurations
  • cpe:2.3:a:wordpress:wordpress:5.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:wordpress:wordpress:5.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wordpress:wordpress:5.6.1:*:*:*:*:*:*:*
    cpe:2.3:a:wordpress:wordpress:5.6.1:*:*:*:*:*:*:*
  • cpe:2.3:a:wordpress:wordpress:5.6.2:*:*:*:*:*:*:*
    cpe:2.3:a:wordpress:wordpress:5.6.2:*:*:*:*:*:*:*
  • cpe:2.3:a:wordpress:wordpress:5.6.3:*:*:*:*:*:*:*
    cpe:2.3:a:wordpress:wordpress:5.6.3:*:*:*:*:*:*:*
  • cpe:2.3:a:wordpress:wordpress:5.6.4:*:*:*:*:*:*:*
    cpe:2.3:a:wordpress:wordpress:5.6.4:*:*:*:*:*:*:*
  • cpe:2.3:a:wordpress:wordpress:5.6.5:*:*:*:*:*:*:*
    cpe:2.3:a:wordpress:wordpress:5.6.5:*:*:*:*:*:*:*
  • cpe:2.3:a:wordpress:wordpress:5.6.6:*:*:*:*:*:*:*
    cpe:2.3:a:wordpress:wordpress:5.6.6:*:*:*:*:*:*:*
  • cpe:2.3:a:wordpress:wordpress:5.6.7:*:*:*:*:*:*:*
    cpe:2.3:a:wordpress:wordpress:5.6.7:*:*:*:*:*:*:*
  • cpe:2.3:a:wordpress:wordpress:5.6.8:*:*:*:*:*:*:*
    cpe:2.3:a:wordpress:wordpress:5.6.8:*:*:*:*:*:*:*
  • cpe:2.3:a:wordpress:wordpress:5.7:*:*:*:*:*:*:*
    cpe:2.3:a:wordpress:wordpress:5.7:*:*:*:*:*:*:*
  • cpe:2.3:a:wordpress:wordpress:5.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:wordpress:wordpress:5.7.0:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
    cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
    cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
CVSS
Base: 4.0 (as of 27-10-2022 - 23:06)
Impact:
Exploitability:
CWE CWE-611
CAPEC
  • XML External Entities Blowup
    This attack takes advantage of the entity replacement property of XML where the value of the replacement is a URI. A well-crafted XML document could have the entity refer to a URI that consumes a large amount of resources to create a denial of service condition. This can cause the system to either freeze, crash, or execute arbitrary code depending on the URI.
Access
VectorComplexityAuthentication
NETWORK LOW SINGLE
Impact
ConfidentialityIntegrityAvailability
PARTIAL NONE NONE
cvss-vector via4 AV:N/AC:L/Au:S/C:P/I:N/A:N
Last major update 27-10-2022 - 23:06
Published 15-04-2021 - 21:15
Last modified 27-10-2022 - 23:06
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