CVE-2017-2667: Hammer cli foreman Improper Certificate Validation Vulnerability

HIGH
Advisory Identifier: GHSA-77h8-xr85-3x5q
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CVSS 8.1
CWE-295 CWE-345
Published
Advisory Summary

CVE-2017-2667 is a HIGH (CVSS 8.1) improper certificate validation vulnerability (CWE-295: Improper Certificate Validation) affecting Hammer cli foreman libraries in the RubyGems ecosystem. The issue involves hammer_cli_foreman improper certificate validation vulnerability. Remediation is available by upgrading affected packages to version 0.10.0.

CVE-2017-2667 at a Glance

CVE Identifier CVE-2017-2667
GHSA Identifier GHSA-77h8-xr85-3x5q
Severity HIGH
CVSS v3.1 Base Score 8.1
CWE Classification CWE-295: Improper Certificate Validation
Affected Product Hammer cli foreman
Package Ecosystem RubyGems
Published Date
Last Updated

Security Impact

CVSS: 8.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

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

How to Fix CVE-2017-2667

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

hammer_cli_foreman fixed: 0.10.0 
Upgrade hammer_cli_foreman to 0.10.0
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 hammer_cli_foreman

How to Check if You Are Affected

To determine whether your application is affected by CVE-2017-2667, inspect your project dependencies for Hammer cli foreman:

inspect dependencies for hammer_cli_foreman

Analyze the terminal output to locate any version of Hammer cli foreman in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.10.0), 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-295: Improper Certificate Validation, where the product does not validate, or incorrectly validates, a certificate. In Hammer cli foreman, 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

Hammer CLI, a CLI utility for Foreman, before version 0.10.0, did not explicitly set the verify_ssl flag for apipie-bindings that disable it by default. As a result the server certificates are not checked and connections are prone to man-in-the-middle attacks.

CVE-2017-2667 Affected Hammer cli foreman Versions

1 component(s)
Fixed Versions:
0.10.0
Product / Package Ecosystem Affected Versions Fixed Version
hammer_cli_foreman
gem/hammer_cli_foreman
RubyGems
< 0.10.0
0.10.0

References

NVD — CVE-2017-2667 NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-2667
access.redhat.com/errata/rhsa-2018:03... WEB
https://access.redhat.com/errata/RHSA-2018:0336
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=1436262
Hammer cli foreman Source Repository REPOSITORY
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/hammer_cli_foreman/CVE-2017-2667.yml
Hammer cli foreman Source Repository REPOSITORY
https://github.com/theforeman/hammer-cli-foreman
Hammer cli foreman Security Information SECURITY
https://web.archive.org/web/20200227181720/http://www.securityfocus.com/bid/97153
projects.theforeman.org/issues/19033 WEB
http://projects.theforeman.org/issues/19033
Hammer cli foreman Security Information SECURITY
http://www.securityfocus.com/bid/97153

Frequently Asked Questions

What is CVE-2017-2667?
CVE-2017-2667 is a security vulnerability in Hammer cli foreman involving hammer_cli_foreman Improper Certificate Validation vulnerability under CWE-295: Improper Certificate Validation.
Which Hammer cli foreman versions are affected?
Affected versions include releases prior to 0.10.0 across affected packages: hammer_cli_foreman.
What version fixes CVE-2017-2667?
Upgrading to 0.10.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is hammer_cli_foreman affected?
Yes, hammer_cli_foreman is affected in releases prior to 0.10.0. Upgrade your dependency to 0.10.0 or later.
What is the CVSS score of CVE-2017-2667?
CVE-2017-2667 has a CVSS v3.1 base score of 8.1 (HIGH) with vector string CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2017-2667?
CVE-2017-2667 is classified under CWE-295: Improper Certificate Validation (The product does not validate, or incorrectly validates, a certificate.).
How can I check RubyGems dependencies for CVE-2017-2667?
Run the dependency tree command: 'inspect dependencies for hammer_cli_foreman'. 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-77h8-xr85-3x5q",
  "modified" : "2023-01-27T00:52:31Z",
  "published" : "2022-05-13T01:36:51Z",
  "aliases" : [ "CVE-2017-2667" ],
  "summary" : "hammer_cli_foreman Improper Certificate Validation vulnerability",
  "details" : "Hammer CLI, a CLI utility for Foreman, before version 0.10.0, did not explicitly set the verify_ssl flag for apipie-bindings that disable it by default. As a result the server certificates are not checked and connections are prone to man-in-the-middle attacks.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "hammer_cli_foreman"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.10.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2017-2667"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2018:0336"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1436262"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/hammer_cli_foreman/CVE-2017-2667.yml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/theforeman/hammer-cli-foreman"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20200227181720/http://www.securityfocus.com/bid/97153"
  }, {
    "type" : "WEB",
    "url" : "http://projects.theforeman.org/issues/19033"
  }, {
    "type" : "WEB",
    "url" : "http://www.securityfocus.com/bid/97153"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-295", "CWE-345" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-01-27T00:52:31Z",
    "nvd_published_at" : "2018-03-12T15:29:00Z"
  }
}