CVE-2019-14243 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

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 https://github.com/mastercactapus/proxyprotocol/releases/tag/v0.0.2

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5