Caddy is an extensible server platform that uses TLS by default. Prior to version 2.11.1, the path sanitization routine in file matcher doesn't sanitize backslashes which can lead to bypassing path related security protections. It affects users with specific Caddy and environment configurations.
Version 2.11.1 fixes the issue.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Caddyserver Caddy
cpe:2.3:a:caddyserver:caddy:*:*:*:*:*:*:*:*
|
— |
2.11.1
|
References 4
https://github.com/caddyserver/caddy/blob/68d50020eef0d4c3398b878f17c8092ca5b58…
security-advisories@github.com
https://github.com/caddyserver/caddy/blob/68d50020eef0d4c3398b878f17c8092ca5b58…
security-advisories@github.com
https://github.com/caddyserver/caddy/releases/tag/v2.11.1
security-advisories@github.com
https://github.com/caddyserver/caddy/security/advisories/GHSA-4xrr-hq4w-6vf4
security-advisories@github.com