Caddy through 0.11.0 sends incorrect certificates for certain invalid requests, making it easier for attackers to enumerate hostnames
Published Nov 10, 2018
3.7
LOWCVSS 3.0
EPSS 0.86%
Description
Caddy through 0.11.0 sends incorrect certificates for certain invalid requests, making it easier for attackers to enumerate hostnames. Specifically, when unable to match a Host header with a vhost in its configuration, it serves the X.509 certificate for a randomly selected vhost in its configuration. Repeated requests (with a nonexistent hostname in the Host header) permit full enumeration of all certificates on the server. This generally permits an attacker to easily and accurately discover the existence of and relationships among hostnames that weren't meant to be public, though this information could likely have been discovered via other methods with additional effort.
Affected products
No data.
- ≤ 0.11.0
No data.
No Red Hat product state for this CVE.
github.com/caddyserver/caddy
Go
Introduced 0 Fixed 0.11.1
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| Go | github.com/caddyserver/caddy | 0 | 0.11.1 |
Remediation
No remediation recorded yet.
References (9)
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-4337 Advisory
- https://github.com/advisories/GHSA-jf2w-mq6r-56v8 Advisory
- https://github.com/caddyserver/caddy/commit/986d4ffe3de32dcb81d334d603a2f0f1d460eb2f
- https://github.com/caddyserver/caddy/commit/f6e50890b3d81cb04146bd7b2c2b59e99830849a
- https://github.com/mholt/caddy/issues/1303 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://github.com/mholt/caddy/issues/2334 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://github.com/mholt/caddy/pull/2015 x_refsource_MISCIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-19148
- https://securitytrails.com/blog/caddy-web-server-ssl-bug ExploitPatchThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://euvd.enisa.europa.eu/vulnerability/EUVD-2022-4337 | Advisory | |
| https://github.com/advisories/GHSA-jf2w-mq6r-56v8 | Advisory | |
| https://github.com/caddyserver/caddy/commit/986d4ffe3de32dcb81d334d603a2f0f1d460eb2f | ||
| https://github.com/caddyserver/caddy/commit/f6e50890b3d81cb04146bd7b2c2b59e99830849a | ||
| https://github.com/mholt/caddy/issues/1303 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://github.com/mholt/caddy/issues/2334 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://github.com/mholt/caddy/pull/2015 | x_refsource_MISCIssue TrackingPatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-19148 | ||
| https://securitytrails.com/blog/caddy-web-server-ssl-bug | ExploitPatchThird Party Advisory |
Change history (0)
No recorded changes yet.