Open redirect in Pivotal Concourse - CVE-2020-5409
Published: May 14, 2020 / Updated: July 17, 2020
Vulnerability identifier: #VU30287
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-5409
CWE-ID: CWE-601
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Pivotal
Affected software:
Pivotal Concourse
Pivotal Concourse
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
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.)
How to mitigate CVE-2020-5409
Install update from vendor's website.