PT-2021-22806 · Unknown · Concrete Cms

D3Addog · Published 2021-09-27 · Updated 2021-10-01 · CVE-2021-40097

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Concrete CMS versions through 8.5.5

Description An issue was discovered that leads to authenticated path traversal, resulting in remote code execution via uploaded PHP code. This issue is related to the bFilename parameter.

Recommendations For versions through 8.5.5, consider restricting access to uploaded PHP code to minimize the risk of exploitation. As a temporary workaround, avoid using the bFilename parameter in affected API endpoints until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2021-40097

Affected Products

Concrete Cms

References · 6

• https://documentation.concretecms.org/developers/introduction/version-history/856-release-notes · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-40097 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-40097 · Security Note
• https://hackerone.com/reports/1102067 · Note
• https://t.me/cibsecurity/29451 · Telegram Post
• https://t.me/cvenotify/21788 · Telegram Post