CVE-2020-2103 Scanner.
Jenkins <=2.218 - Information Disclosure
Free and read-only. Scan only sites you own or are allowed to test.
What This Check Does.
Read-only
It only asks your site for public pages, the way a browser would. Nothing is changed, uploaded or stored.
Up to 2 requests
A small, fixed number of requests, so the check is quick and will not load your site.
Looks for CVE-2020-2103
It looks for the specific sign of this one vulnerability and ends with a clear answer: vulnerable, not vulnerable, or could not be determined.
About CVE-2020-2103. What It Means.
Jenkins through 2.218, LTS 2.204.1 and earlier, is susceptible to information disclosure. An attacker can access exposed session identifiers on a user detail object in the whoAmI diagnostic page and thus potentially access sensitive information, modify data, and/or execute unauthorized operations.
More CVEs In Jenkins.
FAQ
Common Questions.
Jenkins <=2.218 - Information Disclosure. Jenkins through 2.218, LTS 2.204.1 and earlier, is susceptible to information disclosure. An attacker can access exposed session identifiers on a user detail object in the whoAmI diagnostic page and thus potentially access sensitive information, modify data, and/or execute unauthorized operations.
Atlas sends up to 2 read-only requests to your site and looks for the specific sign of CVE-2020-2103 in Jenkins. Nothing is changed, uploaded or stored on your site.
CVE-2020-2103 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing. Its CVSS score is 5.4.
Yes. The check only reads public pages, the same way a browser or a search engine would. Scan only sites you own or are allowed to test.
It means no sign of CVE-2020-2103 was found by this read-only check. It does not prove the site is free of other weaknesses.
Update Jenkins to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. The vendor links and details are in the CVE-2020-2103 briefing linked on this page.
Scan only sites you own or have written permission to test. A result of Not Vulnerable means this read-only check found no sign of CVE-2020-2103; it is not a guarantee that the site is secure.