PT-2020-18463 · Pivotal · Concourse

Mik317 · CVE-2020-5409 · Published 2020-05-13 · Updated 2024-03-06

Positive Technologies (AI Summary)

CVSS v3.1

7.6

High

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

Name of the Vulnerable Software and Affected Versions Pivotal Concourse versions prior to 6.0.0

Description The issue 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.

Recommendations For versions prior to 6.0.0, update to version 6.0.0 or later to resolve the issue. As a temporary workaround, consider restricting access to the OAuth redirect link to trusted websites only. Avoid using untrusted websites with the OAuth redirect link until the issue is resolved.

Fix

Open Redirect

Weakness Enumeration

CWE-601

Related Identifiers

BIT-CONCOURSE-2020-5409

CVE-2020-5409

Affected Products

Concourse

References · 5

• https://tanzu.vmware.com/security/cve-2020-5409 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-5409 · Security Note
• https://osv.dev/vulnerability/CVE-2020-5409 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-concourse-2020-5409 · Vendor Advisory
• https://t.me/cvenotify/3778 · Telegram Post