CVE-2019-12999: Github.com/lightningnetwork/lnd Improper Access Control Vulnerability

HIGH
Advisory Identifier: GHSA-78hj-86cr-6j2v
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CVSS 7.5
CWE-284
Published
Advisory Summary

CVE-2019-12999 is a HIGH (CVSS 7.5) improper access control vulnerability (CWE-284: Improper Access Control) affecting Github.com/lightningnetwork/lnd libraries in the Go ecosystem. The issue involves improper access control in lightning network daemon. Remediation is available by upgrading affected packages to version 0.7.1-beta.

CVE-2019-12999 at a Glance

CVE Identifier CVE-2019-12999
GHSA Identifier GHSA-78hj-86cr-6j2v
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-284: Improper Access Control
Affected Product Github.com/lightningnetwork/lnd
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:H/A:N).

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 High (I:H)
Availability None (A:N)

How to Fix CVE-2019-12999

To remediate this vulnerability, upgrade all affected Github.com/lightningnetwork/lnd 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/lightningnetwork/lnd fixed: 0.7.1-beta 
Upgrade github.com/lightningnetwork/lnd to 0.7.1-beta
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/lightningnetwork/lnd

How to Check if You Are Affected

To determine whether your application is affected by CVE-2019-12999, inspect your project dependencies for Github.com/lightningnetwork/lnd:

inspect dependencies for github.com/lightningnetwork/lnd

Analyze the terminal output to locate any version of Github.com/lightningnetwork/lnd in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.7.1-beta), 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-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. In Github.com/lightningnetwork/lnd, 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

Lightning Network Daemon (lnd) before 0.7 allows attackers to trigger loss of funds because of Incorrect Access Control.

CVE-2019-12999 Affected Github.com/lightningnetwork/lnd Versions

1 component(s)
Fixed Versions:
0.7.1-beta
Product / Package Ecosystem Affected Versions Fixed Version
github.com/lightningnetwork/lnd
golang/github.com/lightningnetwork/lnd
Go
< 0.7.1-beta
0.7.1-beta

References

NVD — CVE-2019-12999 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-12999
Github.com/lightningnetwork/lnd Source Repository REPOSITORY
https://github.com/lightninglabs/chanleakcheck
Github.com/lightningnetwork/lnd Source Repository REPOSITORY
https://github.com/lightningnetwork/lnd/commits/master
Github.com/lightningnetwork/lnd Release RELEASE
https://github.com/lightningnetwork/lnd/releases/tag/v0.7.0-beta
lists.linuxfoundation.org/pipermail/lightning... WEB
https://lists.linuxfoundation.org/pipermail/lightning-dev/2019-September/002174.html

Frequently Asked Questions

What is CVE-2019-12999?
CVE-2019-12999 is a security vulnerability in Github.com/lightningnetwork/lnd involving Improper Access Control in Lightning Network Daemon under CWE-284: Improper Access Control.
Which Github.com/lightningnetwork/lnd versions are affected?
Affected versions include releases prior to 0.7.1-beta across affected packages: github.com/lightningnetwork/lnd.
What version fixes CVE-2019-12999?
Upgrading to 0.7.1-beta (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/lightningnetwork/lnd affected?
Yes, github.com/lightningnetwork/lnd is affected in releases prior to 0.7.1-beta. Upgrade your dependency to 0.7.1-beta or later.
What is the CVSS score of CVE-2019-12999?
CVE-2019-12999 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:H/A:N.
What CWE is associated with CVE-2019-12999?
CVE-2019-12999 is classified under CWE-284: Improper Access Control (The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.).
How can I check Go dependencies for CVE-2019-12999?
Run the dependency tree command: 'inspect dependencies for github.com/lightningnetwork/lnd'. 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-78hj-86cr-6j2v",
  "modified" : "2021-05-17T21:56:38Z",
  "published" : "2021-05-18T15:30:22Z",
  "aliases" : [ "CVE-2019-12999" ],
  "summary" : "Improper Access Control in Lightning Network Daemon",
  "details" : "Lightning Network Daemon (lnd) before 0.7 allows attackers to trigger loss of funds because of Incorrect Access Control.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/lightningnetwork/lnd"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.7.1-beta"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 0.7.0"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-12999"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/lightninglabs/chanleakcheck"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/lightningnetwork/lnd/commits/master"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/lightningnetwork/lnd/releases/tag/v0.7.0-beta"
  }, {
    "type" : "WEB",
    "url" : "https://lists.linuxfoundation.org/pipermail/lightning-dev/2019-September/002174.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-284" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-05-17T21:56:38Z",
    "nvd_published_at" : null
  }
}