Vulnerability identifier: #VU26353

Vulnerability risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-15798

CWE-ID: CWE-601

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Pivotal Concourse
Server applications / Application servers

Vendor: Pivotal

Description

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data in the oAuth redirect link. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.

Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Pivotal Concourse: 5.5.0 - 5.5.9, 5.8.0, 5.2.0 - 5.2.7, 4.2.0 - 4.2.1

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External links
http://pivotal.io/security/cve-2018-15798

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.