CVE-2021-4075: Snipe/snipe it Server-Side Request Forgery Vulnerability

HIGH
Advisory Identifier: GHSA-553q-hpvp-q8pc
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CVSS 7.2
CWE-918
Published
Advisory Summary

CVE-2021-4075 is a HIGH (CVSS 7.2) server-side request forgery vulnerability (CWE-918: Server-Side Request Forgery (SSRF)) affecting Snipe/snipe it libraries in the Packagist ecosystem. The issue involves server-side request forgery in snipe/snipe-it. Remediation is available by upgrading affected packages to version 6.0.0-GM.

CVE-2021-4075 at a Glance

CVE Identifier CVE-2021-4075
GHSA Identifier GHSA-553q-hpvp-q8pc
Severity HIGH
CVSS v3.1 Base Score 7.2
CWE Classification CWE-918: Server-Side Request Forgery (SSRF)
Affected Product Snipe/snipe it
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 7.2

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
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-2021-4075

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

snipe/snipe-it fixed: 6.0.0-GM 
Upgrade snipe/snipe-it to 6.0.0-GM
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 snipe/snipe-it

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-4075, inspect your project dependencies for Snipe/snipe it:

inspect dependencies for snipe/snipe-it

Analyze the terminal output to locate any version of Snipe/snipe it in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.0.0-GM), 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-918: Server-Side Request Forgery (SSRF), where the web server receives a url or similar request from an upstream component and retrieves the contents of this url, but it does not sufficiently ensure that the request is being sent to the expected destination. In Snipe/snipe it, 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

Admin users on the external network can perform blind POST-based SSRF (issue requests on behalf of the server into the internal network) via the Slack Integration. This vulnerability is capable of port-scanning of the internal network, issue POST requests to web servers on the internal network which can be escalated to higher-impact.

CVE-2021-4075 Affected Snipe/snipe it Versions

1 component(s)
Fixed Versions:
6.0.0-GM
Product / Package Ecosystem Affected Versions Fixed Version
snipe/snipe-it
 Packagist
< 6.0.0-GM
6.0.0-GM

References

NVD — CVE-2021-4075 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-4075
Security Fix Commit FIX COMMIT
https://github.com/snipe/snipe-it/commit/4612b9e711b3ff5d2bcddbec5b18866d25f8e34e
Snipe/snipe it Source Repository REPOSITORY
https://github.com/snipe/snipe-it
huntr.dev/bounties/4386fd8b-8... WEB
https://huntr.dev/bounties/4386fd8b-8c80-42bb-87b8-b506c46597de

Frequently Asked Questions

What is CVE-2021-4075?
CVE-2021-4075 is a security vulnerability in Snipe/snipe it involving Server-Side Request Forgery in snipe/snipe-it under CWE-918: Server-Side Request Forgery (SSRF).
Which Snipe/snipe it versions are affected?
Affected versions include releases prior to 6.0.0-GM across affected packages: snipe/snipe-it.
What version fixes CVE-2021-4075?
Upgrading to 6.0.0-GM (or the latest patched release for your respective branch) resolves the vulnerability.
Is snipe/snipe-it affected?
Yes, snipe/snipe-it is affected in releases prior to 6.0.0-GM. Upgrade your dependency to 6.0.0-GM or later.
What is the CVSS score of CVE-2021-4075?
CVE-2021-4075 has a CVSS v3.1 base score of 7.2 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2021-4075?
CVE-2021-4075 is classified under CWE-918: Server-Side Request Forgery (SSRF) (The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.).
How can I check Packagist dependencies for CVE-2021-4075?
Run the dependency tree command: 'inspect dependencies for snipe/snipe-it'. 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-553q-hpvp-q8pc",
  "modified" : "2021-12-07T21:24:53Z",
  "published" : "2021-12-10T20:22:15Z",
  "aliases" : [ "CVE-2021-4075" ],
  "summary" : "Server-Side Request Forgery in snipe/snipe-it",
  "details" : "Admin users on the external network can perform blind POST-based SSRF (issue requests on behalf of the server into the internal network) via the Slack Integration. This vulnerability is capable of port-scanning of the internal network, issue POST requests to web servers on the internal network which can be escalated to higher-impact.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "snipe/snipe-it"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "6.0.0-GM"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 5.3.3"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-4075"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/snipe/snipe-it/commit/4612b9e711b3ff5d2bcddbec5b18866d25f8e34e"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/snipe/snipe-it"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.dev/bounties/4386fd8b-8c80-42bb-87b8-b506c46597de"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-918" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-12-07T21:24:53Z",
    "nvd_published_at" : "2021-12-06T21:15:00Z"
  }
}