CVE-2020-2105
Jenkins REST APIs vulnerable to clickjacking
Description
Jenkins 2.218 and earlier, LTS 2.204.1 and earlier does not serve the `X-Frame-Options: deny` HTTP header on REST API responses to protect against clickjacking attacks. An attacker could exploit this by routing the victim through a specially crafted web page that embeds a REST API endpoint in an iframe and tricking the user into performing an action which would allow for the attacker to learn the content of that REST API endpoint. Jenkins 2.219, LTS 2.204.2 now adds the `X-Frame-Options: deny` HTTP header to REST API responses, which prevents these types of clickjacking attacks.
How to fix CVE-2020-2105
To remediate CVE-2020-2105, upgrade the affected package to a fixed version below.
- —upgrade to 2.218.1 or later
- —upgrade to 2.204.2 or later
Is CVE-2020-2105 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.218.1
- from 0, < 2.204.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | LOW3.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N |