CVE-2021-3660
First published: Fri Jul 09 2021(Updated: )
Cockpit (and its plugins) do not seem to protect itself against clickjacking. It is possible to render a page from a cockpit server via another website, inside an <iFrame> HTML entry. This may be used by a malicious website in clickjacking or similar attacks.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cockpit-project Cockpit | <254 | |
| Redhat Enterprise Linux | =8.0 |
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Reference Links
- https://bugzilla.redhat.com/show_bug.cgi?id=1980688
- https://github.com/cockpit-project/cockpit/commit/8d9bc10d8128aae03dfde62fd00075fe492ead10
- https://github.com/cockpit-project/cockpit/issues/16122
- https://cockpit-project.org/guide/latest/embedding.html
- https://developer.mozilla.org/de/docs/Web/HTTP/Headers/X-Frame-Options
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1980688#c5
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1984907
- https://github.com/cockpit-project/cockpit/pull/16342
- https://github.com/cockpit-project/cockpit/pull/16342/commits/2a3b6854107ec7f1713a8da7eaeb7c666bf0ee0e
- https://github.com/cockpit-project/cockpit/blob/main/test/verify/check-embed
- https://github.com/cockpit-project/cockpit/commit/46f6839d1af4e662648a85f3e54bba2d57f39f0e
- https://github.com/cockpit-project/cockpit/pull/16342/commits/f49ad4874e1b936abfb60607df735698cb672ae4
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1980688#c14
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1891944
- https://github.com/cockpit-project/cockpit/commit/46f6839d1af4e6
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1980688#c25
- https://access.redhat.com/errata/RHSA-2022:2008
- https://access.redhat.com/security/cve/cve-2021-3660
Frequently Asked Questions
What is CVE-2021-3660?
CVE-2021-3660 is a vulnerability in Cockpit (and its plugins) that allows clickjacking attacks.
How does CVE-2021-3660 work?
CVE-2021-3660 allows a malicious website to render a page from a Cockpit server via an <iFrame> HTML entry, enabling clickjacking or similar attacks.
Which software versions are affected by CVE-2021-3660?
CVE-2021-3660 affects all versions up to 254 of Cockpit and Redhat Enterprise Linux 8.0.
What is the severity of CVE-2021-3660?
CVE-2021-3660 has a severity rating of medium, with a CVSS score of 4.3.
How can I protect against CVE-2021-3660?
To protect against CVE-2021-3660, ensure that your Cockpit installation implements X-Frame-Options to prevent clickjacking attacks.
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