Description

The CivetWeb web library does not validate uploaded filepaths when running on an OS other than Windows, when using the built-in HTTP form-based file upload mechanism, via the mg_handle_form_request API. Web applications that use the file upload form handler, and use parts of the user-controlled filename in the output path, are susceptible to directory traversal

Related CPE's

a

civetweb_project

civetweb

Vulnerable

a

siemens

sinec_infrastructure_network_services

Vulnerable

References

https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf

https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf

PatchThird Party Advisory

https://groups.google.com/g/civetweb/c/yPBxNXdGgJQ

Mailing ListThird Party Advisory

https://jfrog.com/blog/cve-2020-27304-rce-via-directory-traversal-in-civetweb-http-server/

ExploitThird Party Advisory

Weaknesses

[email protected]

Primary
CWE-22

[email protected]

Secondary
CWE-23

CVSS impact metrics

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.8 · Critical

  • CVSS V3.1

  • CVSS V3.0

  • CVSS V2.0

Information

Source identifier

[email protected]

Vulnerability status

Modified

Published

2021-10-21T16:15:07.737

3 years ago

Last modified

2022-06-14T11:15:09.047

3 years ago