Vulnerabilities in pkg:golang/github.com/mastercactapus/proxyprotocol

PACKAGE
Advisory Identifier: GHSA-85c5-ccm8-vr96
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Advisory Summary

CVE-2019-14243 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-20: Improper Input Validation) affecting Github.com/mastercactapus/proxyprotocol libraries in the Go ecosystem. The issue involves mastercactapus proxyprotocol vulnerable to denial of service. Remediation is available by upgrading affected packages to version 0.0.2.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:golang/github.com/mastercactapus/proxyprotocol

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:golang/github.com/mastercactapus/proxyprotocol. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-85c5-ccm8-vr96 CVE-2019-14243 HIGH mastercactapus proxyprotocol vulnerable to denial of service

CVE-2019-14243 at a Glance

CVE Identifier CVE-2019-14243
GHSA Identifier GHSA-85c5-ccm8-vr96
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-20: Improper Input Validation
Affected Product Github.com/mastercactapus/proxyprotocol
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2019-14243

To remediate this vulnerability, upgrade all affected Github.com/mastercactapus/proxyprotocol dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/mastercactapus/proxyprotocol fixed: 0.0.2 
Upgrade github.com/mastercactapus/proxyprotocol to 0.0.2
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/mastercactapus/proxyprotocol

How to Check if You Are Affected

To determine whether your application is affected by CVE-2019-14243, inspect your project dependencies for Github.com/mastercactapus/proxyprotocol:

inspect dependencies for github.com/mastercactapus/proxyprotocol

Analyze the terminal output to locate any version of Github.com/mastercactapus/proxyprotocol in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.0.2), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-20: Improper Input Validation, where the product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. In Github.com/mastercactapus/proxyprotocol, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2019-14243 Affected Github.com/mastercactapus/proxyprotocol Versions

1 component(s)
Fixed Versions:
0.0.2
Product / Package Ecosystem Affected Versions Fixed Version
github.com/mastercactapus/proxyprotocol
golang/github.com/mastercactapus/proxyprotocol
Go
< 0.0.2
0.0.2

References

NVD — CVE-2019-14243 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-14243
Github.com/mastercactapus/proxyprotocol Source Repository REPOSITORY
https://github.com/mastercactapus/caddy-proxyprotocol/issues/8
Github.com/mastercactapus/proxyprotocol Source Repository REPOSITORY
https://github.com/mastercactapus/proxyprotocol/issues/1
Security Fix Commit FIX COMMIT
https://github.com/mastercactapus/proxyprotocol/commit/5c4a101121fc3e868026189c7a73f7f19eef90ac
caddy.community/t/dos-in-http-proxy... WEB
https://caddy.community/t/dos-in-http-proxyprotocol-plugin/6014
Github.com/mastercactapus/proxyprotocol Source Repository REPOSITORY
https://github.com/mastercactapus/proxyprotocol
Github.com/mastercactapus/proxyprotocol Source Repository REPOSITORY
https://github.com/mastercactapus/proxyprotocol/compare/ef496d7...5c4a101
Github.com/mastercactapus/proxyprotocol Release RELEASE
https://github.com/mastercactapus/proxyprotocol/releases/tag/v0.0.2

Frequently Asked Questions

What is CVE-2019-14243?
CVE-2019-14243 is a security vulnerability in Github.com/mastercactapus/proxyprotocol involving mastercactapus proxyprotocol vulnerable to denial of service under CWE-20: Improper Input Validation.
Which Github.com/mastercactapus/proxyprotocol versions are affected?
Affected versions include releases prior to 0.0.2 across affected packages: github.com/mastercactapus/proxyprotocol.
What version fixes CVE-2019-14243?
Upgrading to 0.0.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/mastercactapus/proxyprotocol affected?
Yes, github.com/mastercactapus/proxyprotocol is affected in releases prior to 0.0.2. Upgrade your dependency to 0.0.2 or later.
What is the CVSS score of CVE-2019-14243?
CVE-2019-14243 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2019-14243?
CVE-2019-14243 is classified under CWE-20: Improper Input Validation (The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.).
How can I check Go dependencies for CVE-2019-14243?
Run the dependency tree command: 'inspect dependencies for github.com/mastercactapus/proxyprotocol'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-85c5-ccm8-vr96",
  "modified" : "2023-08-25T21:43:47Z",
  "published" : "2022-05-24T16:51:05Z",
  "aliases" : [ "CVE-2019-14243" ],
  "summary" : "mastercactapus proxyprotocol vulnerable to denial of service",
  "details" : "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" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/mastercactapus/proxyprotocol"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.0.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-14243"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mastercactapus/caddy-proxyprotocol/issues/8"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mastercactapus/proxyprotocol/issues/1"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mastercactapus/proxyprotocol/commit/5c4a101121fc3e868026189c7a73f7f19eef90ac"
  }, {
    "type" : "WEB",
    "url" : "https://caddy.community/t/dos-in-http-proxyprotocol-plugin/6014"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/mastercactapus/proxyprotocol"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mastercactapus/proxyprotocol/compare/ef496d7...5c4a101"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/mastercactapus/proxyprotocol/releases/tag/v0.0.2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-14T20:53:45Z",
    "nvd_published_at" : "2019-07-23T22:15:00Z"
  }
}