PT-2024-18910 · Caddy · Caddy

David Pokora + 2 · Published 2024-02-16 · Updated 2024-06-28 · CVE-2024-21494

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions github.com/greenpau/caddy-security versions all

Description The issue concerns improper input sanitization, allowing for Authentication Bypass by Spoofing via the X-Forwarded-For header. An attacker can spoof an IP address used in the user identity module, specifically targeting the /whoami API endpoint. This could lead to unauthorized access if the system trusts the spoofed IP address.

Recommendations As a temporary workaround, consider disabling the use of the X-Forwarded-For header in the user identity module until a patch is available. Restrict access to the /whoami API endpoint to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

XSS

Authentication Bypass by Spoofing

Weakness Enumeration

CWE-79

CWE-290

Related Identifiers

CVE-2024-21494

GHSA-VJ36-3CCR-6563

GO-2024-2558

Affected Products

Caddy

References · 11

• https://osv.dev/vulnerability/GO-2024-2558 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-vj36-3ccr-6563 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-21494 · Security Note
• https://osv.dev/vulnerability/CVE-2024-21494 · Vendor Advisory
• https://github.com/greenpau/caddy-security/issues/266 · Note
• https://twitter.com/CVEnew/status/1758721373122543929 · Twitter Post
• https://blog.trailofbits.com/2023/09/18/security-flaws-in-an-sso-plugin-for-caddy · Note
• https://t.me/cvenotify/71842 · Telegram Post
• https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-6249859 · Note
• https://twitter.com/VulmonFeeds/status/1758744179415437440 · Twitter Post
• https://github.com/advisories/GHSA-vj36-3ccr-6563 · Note