CVE-2020-12477: Nilsteampassnet/teampass Incorrect Authorization Vulnerability

HIGH
Advisory Identifier: GHSA-fv48-hjhp-94c7
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CVSS 7.5
CWE-863
Published
Advisory Summary

CVE-2020-12477 is a HIGH (CVSS 7.5) incorrect authorization vulnerability (CWE-863: Incorrect Authorization) affecting Nilsteampassnet/teampass libraries in the Packagist ecosystem. The issue involves incorrect authorization in teampass. Remediation is available in the latest vendor maintenance releases.

CVE-2020-12477 at a Glance

CVE Identifier CVE-2020-12477
GHSA Identifier GHSA-fv48-hjhp-94c7
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-863: Incorrect Authorization
Affected Product Nilsteampassnet/teampass
Package Ecosystem Packagist
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:H/I:N/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 High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2020-12477

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

nilsteampassnet/teampass fixed: Latest secure release 
Upgrade nilsteampassnet/teampass to Latest secure release
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 nilsteampassnet/teampass

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-12477, inspect your project dependencies for Nilsteampassnet/teampass:

inspect dependencies for nilsteampassnet/teampass

Analyze the terminal output to locate any version of Nilsteampassnet/teampass in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), 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-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Nilsteampassnet/teampass, 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

The REST API functions in TeamPass 2.1.27.36 allow any user with a valid API token to bypass IP address whitelist restrictions via an X-Forwarded-For client HTTP header to the getIp function.

CVE-2020-12477 Affected Nilsteampassnet/teampass Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
nilsteampassnet/teampass
 Packagist
≤ 2.1.27.36

References

NVD — CVE-2020-12477 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-12477
Nilsteampassnet/teampass Source Repository REPOSITORY
https://github.com/nilsteampassnet/TeamPass/issues/2761

Frequently Asked Questions

What is CVE-2020-12477?
CVE-2020-12477 is a security vulnerability in Nilsteampassnet/teampass involving Incorrect Authorization in TeamPass under CWE-863: Incorrect Authorization.
Which Nilsteampassnet/teampass versions are affected?
Affected versions include releases prior to current release patches across affected packages: nilsteampassnet/teampass.
What version fixes CVE-2020-12477?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is nilsteampassnet/teampass affected?
Yes, nilsteampassnet/teampass is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2020-12477?
CVE-2020-12477 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:H/I:N/A:N.
What CWE is associated with CVE-2020-12477?
CVE-2020-12477 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).
How can I check Packagist dependencies for CVE-2020-12477?
Run the dependency tree command: 'inspect dependencies for nilsteampassnet/teampass'. 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-fv48-hjhp-94c7",
  "modified" : "2021-07-26T21:12:18Z",
  "published" : "2021-07-26T21:20:38Z",
  "aliases" : [ "CVE-2020-12477" ],
  "summary" : "Incorrect Authorization in TeamPass",
  "details" : "The REST API functions in TeamPass 2.1.27.36 allow any user with a valid API token to bypass IP address whitelist restrictions via an X-Forwarded-For client HTTP header to the getIp function.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "nilsteampassnet/teampass"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.1.27.36"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-12477"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/nilsteampassnet/TeamPass/issues/2761"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-07-26T21:12:18Z",
    "nvd_published_at" : "2020-04-29T22:15:00Z"
  }
}