Vulnerability Details : CVE-2020-5409
Pivotal Concourse, most versions prior to 6.0.0, allows redirects to untrusted websites in its login flow. A remote unauthenticated attacker could convince a user to click on a link using the OAuth redirect link with an untrusted website and gain access to that user's access token in Concourse. (This issue is similar to, but distinct from, CVE-2018-15798.)
Vulnerability category: Open redirect
Products affected by CVE-2020-5409
- cpe:2.3:a:pivotal_software:concourse:*:*:*:*:*:*:*:*
- cpe:2.3:a:pivotal_software:concourse:*:*:*:*:*:*:*:*
- cpe:2.3:a:pivotal_software:concourse:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-5409
0.12%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 46 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-5409
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:N |
8.6
|
4.9
|
NIST | |
7.6
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H |
2.8
|
4.7
|
Pivotal Software, Inc. | |
6.1
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
2.8
|
2.7
|
NIST |
CWE ids for CVE-2020-5409
-
The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.Assigned by:
- nvd@nist.gov (Primary)
- security@pivotal.io (Secondary)
References for CVE-2020-5409
-
https://tanzu.vmware.com/security/cve-2020-5409
CVE-2020-5409: Concourse Open Redirect in the /sky/login endpoint | Security | VMware TanzuVendor Advisory
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