CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2019-14243
headerv2.go in mastercactapus proxyprotocol before 0.0.2, as used in the mastercactapus caddy-proxyprotocol plugin through 0.0.2 for Caddy, allows remote attackers to cause a denial of service (webserver panic and daemon crash) via a crafted HAProxy PROXY v2 request with truncated source/destination address data.
Severity
- EPSS
- 4.3% chance of exploitation in the next 30 days; higher than 91% of CVEs (scores of 2026-10-31)
- CWE
- CWE-20
- Published
- Modified
- Record from
- the NVD, synced
Affected
- haproxy:proxyprotocol
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-85c5-ccm8-vr96 | Go | github.com/mastercactapus/proxyprotocol | <0.0.2 | 0.0.2 |
| GO-2023-1923 | Go | github.com/mastercactapus/proxyprotocol | <0.0.2 | 0.0.2 |
References
- https://caddy.community/t/dos-in-http-proxyprotocol-plugin/6014
- https://github.com/mastercactapus/caddy-proxyprotocol/issues/8
- https://github.com/mastercactapus/proxyprotocol/commit/5c4a101121fc3e868026189c7a73f7f19eef90ac
- https://github.com/mastercactapus/proxyprotocol/compare/ef496d7...5c4a101
- https://github.com/mastercactapus/proxyprotocol/issues/1