Vulnerability identifier: #VU85912

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: CVE-2024-23656

CWE-ID: CWE-16

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Dex
Server applications / Directory software, identity management

Vendor: Dex IdP

Description

The issue may allow a remote attacker to bypass implemented security restrictions.

The issue exists due to the application discards TLSconfig and always serves TLS 1.0/1.1 along with insecure ciphers. A remote attacker can perform MitM attack and gain access to sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Dex: 2.37.0

---

External links
http://github.com/dexidp/dex/security/advisories/GHSA-gr79-9v6v-gc9r
http://github.com/dexidp/dex/issues/2848
http://github.com/dexidp/dex/pull/2964
http://github.com/dexidp/dex/commit/5bbdb4420254ba73b9c4df4775fe7bdacf233b17
http://github.com/dexidp/dex/blob/70d7a2c7c1bb2646b1a540e49616cbc39622fb83/cmd/dex/serve.go#L425

---

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.