Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2020-27304

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

Published

2021-10-21T16:15:07.737

Last Modified

2024-11-21T05:21:01.317

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Secondary
CWE-23
Type: Primary
CWE-22

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	civetweb_project	civetweb	< 1.15	Yes
Application	siemens	sinec_infrastructure_network_services	< 1.0.1.1	Yes

References

https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf ([email protected])
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf Patch, Third Party Advisory ([email protected])
https://groups.google.com/g/civetweb/c/yPBxNXdGgJQ Mailing List, Third Party Advisory ([email protected])
https://jfrog.com/blog/cve-2020-27304-rce-via-directory-traversal-in-civetweb-http-server/ Exploit, Third Party Advisory ([email protected])
https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf (af854a3a-2127-422b-91ae-364da2661108)
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://groups.google.com/g/civetweb/c/yPBxNXdGgJQ Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://jfrog.com/blog/cve-2020-27304-rce-via-directory-traversal-in-civetweb-http-server/ Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)