Information disclosure in Dex



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-39222
CWE-ID CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Dex
Server applications / Directory software, identity management

Vendor Dex IdP

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU68302

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-39222

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to the way OAuth are handled during the OIDC flow. A remote attacker can trick the victim to navigate to a malicious website and guiding them through the OIDC flow, steal the OAuth authorization code in the process. The authorization code then can be exchanged by the attacker for a token, gaining access to applications accepting that token.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Dex: 2.0.0 - 2.34.0

CPE2.3 External links

https://github.com/dexidp/dex/security/advisories/GHSA-vh7g-p26c-j2cw
https://github.com/dexidp/dex/commit/49471b14c8080ddb034d4855841123d378b7a634


Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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