Medium severity · published May 14, 2020
CVE-2020-5409
Pivotal Concourse, most versions prior to 6.0.0, allows redirects to untrusted websites in its login flow
6.1
CVSS
0.9%
EPSS
No
On KEV
Description
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.)
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 60% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
Concourse · Pivotal Software
before 5.2.8; 5.3.0 before 5.5.10; 5.6.0 before 5.8.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-5409
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-5409
Vendor Advisory
https://tanzu.vmware.com/security/cve-2020-5409
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