Vulnerability DatabaseCVE-2019-14243
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CVE-2019-14243
Published:July 23, 2019
Updated:July 21, 2026
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.
Affected Packages
github.com/mastercactapus/proxyprotocol (GO):
Affected version(s) =v0.0.1 <v0.0.2
Fix Suggestion:
Update to version v0.0.2
Related Resources (9)
https://github.com/mastercactapus/proxyprotocol
https://github.com/mastercactapus/proxyprotocol/compare/ef496d7...5c4a101
https://github.com/mastercactapus/proxyprotocol/releases/tag/v0.0.2
https://github.com/mastercactapus/proxyprotocol/issues/1
https://github.com/mastercactapus/proxyprotocol/commit/5c4a101121fc3e868026189c7a73f7f19eef90ac
https://github.com/mastercactapus/caddy-proxyprotocol/issues/8
https://nvd.nist.gov/vuln/detail/CVE-2019-14243
https://caddy.community/t/dos-in-http-proxyprotocol-plugin/6014
https://github.com/advisories/GHSA-85c5-ccm8-vr96
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Improper Input Validation
CWE-20
EPSS
Base Score:
4.29