CVE-2021-38557: Incorrect Permission Assignment for Critical Resource

September 2, 2021 (updated September 3, 2021)

raspap-webgui in RaspAP 2.6.6 allows attackers to execute commands as root because of the insecure sudoers permissions. The www-data account can execute /etc/raspap/hostapd/enablelog.sh as root with no password; however, the www-data account can also overwrite /etc/raspap/hostapd/enablelog.sh with any executable content.

References

github.com/RaspAP/raspap-webgui
github.com/RaspAP/raspap-webgui/blob/fabc48c7daae4013b9888f266332e510b196a062/installers/raspap.sudoers
github.com/advisories/GHSA-536p-4pcj-5mr9
nvd.nist.gov/vuln/detail/CVE-2021-38557
zerosecuritypenetrationtesting.com/?page_id=306

Detect and mitigate CVE-2021-38557 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →