CVE-2018-15798: URL Redirection to Untrusted Site ('Open Redirect')

February 15, 2022 (updated October 2, 2023)

Pivotal Concourse Release, versions 4.x prior to 4.2.2, login flow allows redirects to untrusted websites. 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.

References

github.com/advisories/GHSA-9689-rx4v-cqgc
github.com/concourse/concourse/blob/release/5.2.x/release-notes/v5.2.8.md
github.com/concourse/concourse/pull/5350/commits/38cb4cc025e5ed28764b4adc363a0bbf41f3c7cb
nvd.nist.gov/vuln/detail/CVE-2018-15798
pivotal.io/security/cve-2018-15798

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