Vulnerability identifier: #VU33001

Vulnerability risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-601

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
oauth2_proxy
Server applications / Other server solutions

Vendor: Pierce Lopez

Description

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

The vulnerability exists due to improper sanitization of user-supplied data. 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

oauth2_proxy: 0.1 - 2.7.0

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External links
http://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMPLOXILNOAUTH2PROXY-590117
http://github.com/ploxiln/oauth2_proxy/pull/59
http://github.com/ploxiln/oauth2_proxy/pull/61
http://github.com/ploxiln/oauth2_proxy/releases/tag/v2.7.1

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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.