Open redirect in Caddy

Published: 2023-08-18 | Updated: 2023-08-24

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-29718 CVE-2022-28923
CWE-ID	CWE-601
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Caddy Web applications / Other software
Vendor	Caddy

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Open redirect

EUVDB-ID: #VU79685

Risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-29718

CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Exploit availability: No

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

Caddy: 2.0.0 - 2.4.6

CPE2.3

External links

https://github.com/caddyserver/caddy/pull/4499
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CP2VIUT5IKA3OKM6YWA5LTLJ2GTEIH7C/

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.

2) Open redirect

EUVDB-ID: #VU79935