SB2023081872 - Open redirect in Caddy

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Open redirect (CVE-ID: CVE-2022-29718)

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.

2) Open redirect (CVE-ID: CVE-2022-28923)

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.

Remediation

Install update from vendor's website.

References

• https://github.com/caddyserver/caddy/pull/4499
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CP2VIUT5IKA3OKM6YWA5LTLJ2GTEIH7C/
• https://lednerb.de/en/publications/responsible-disclosure/caddy-open-redirect-vulnerability/