CVE-2022-0415: Gogs.io/gogs Unrestricted Upload Of File With Vulnerability

HIGH
Advisory Identifier: GHSA-5gjh-5j4f-cpwv
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CVSS 8.8
CWE-20 CWE-434
Published
Advisory Summary

CVE-2022-0415 is a HIGH (CVSS 8.8) unrestricted upload of file with vulnerability (CWE-20: Improper Input Validation) affecting Gogs.io/gogs libraries in the Go ecosystem. The issue involves unrestricted upload of file with dangerous type in gogs. Remediation is available by upgrading affected packages to version 0.12.6.

CVE-2022-0415 at a Glance

CVE Identifier CVE-2022-0415
GHSA Identifier GHSA-5gjh-5j4f-cpwv
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-20: Improper Input Validation
Affected Product Gogs.io/gogs
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 8.8

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2022-0415

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

gogs.io/gogs fixed: 0.12.6 
Upgrade gogs.io/gogs to 0.12.6
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 gogs.io/gogs

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-0415, inspect your project dependencies for Gogs.io/gogs:

inspect dependencies for gogs.io/gogs

Analyze the terminal output to locate any version of Gogs.io/gogs in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.12.6), 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 Gogs.io/gogs, 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

### Impact The malicious user is able to upload a crafted `config` file into repository's `.git` directory with to gain SSH access to the server. All installations with [repository upload enabled (default)](https://github.com/gogs/gogs/blob/f36eeedbf89328ee70cc3a2e239f6314f9021f58/conf/app.ini#L127-L129) are affected. ### Patches Repository file uploads are prohibited to its `.git` directory. Users should upgrade to 0.12.6 or the latest 0.13.0+dev. ### Workarounds [Disable repository files upload](https://github.com/gogs/gogs/blob/f36eeedbf89328ee70cc3a2e239f6314f9021f58/conf/app.ini#L128-L129). ### References https://huntr.dev/bounties/b4928cfe-4110-462f-a180-6d5673797902/ ### For more information If you have any questions or comments about this advisory, please post on #6833.

CVE-2022-0415 Affected Gogs.io/gogs Versions

1 component(s)
Fixed Versions:
0.12.6
Product / Package Ecosystem Affected Versions Fixed Version
gogs.io/gogs
golang/gogs.io/gogs
Go
< 0.12.6
0.12.6

References

GitHub Advisory / Wiki ADVISORY
https://github.com/gogs/gogs/security/advisories/GHSA-5gjh-5j4f-cpwv
NVD — CVE-2022-0415 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-0415
Gogs.io/gogs Source Repository REPOSITORY
https://github.com/gogs/gogs/issues/6833
Gogs.io/gogs Source Repository REPOSITORY
https://github.com/gogs/gogs/pull/6838
Security Fix Commit FIX COMMIT
https://github.com/gogs/gogs/commit/0fef3c9082269e9a4e817274942a5d7c50617284
Gogs.io/gogs Source Repository REPOSITORY
https://github.com/gogs/gogs
huntr.dev/bounties/b4928cfe-4... WEB
https://huntr.dev/bounties/b4928cfe-4110-462f-a180-6d5673797902

Frequently Asked Questions

What is CVE-2022-0415?
CVE-2022-0415 is a security vulnerability in Gogs.io/gogs involving Unrestricted Upload of File with Dangerous Type in Gogs under CWE-20: Improper Input Validation.
Which Gogs.io/gogs versions are affected?
Affected versions include releases prior to 0.12.6 across affected packages: gogs.io/gogs.
What version fixes CVE-2022-0415?
Upgrading to 0.12.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is gogs.io/gogs affected?
Yes, gogs.io/gogs is affected in releases prior to 0.12.6. Upgrade your dependency to 0.12.6 or later.
What is the CVSS score of CVE-2022-0415?
CVE-2022-0415 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2022-0415?
CVE-2022-0415 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-2022-0415?
Run the dependency tree command: 'inspect dependencies for gogs.io/gogs'. 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-5gjh-5j4f-cpwv",
  "modified" : "2022-03-28T16:46:41Z",
  "published" : "2022-03-28T16:46:41Z",
  "aliases" : [ "CVE-2022-0415" ],
  "summary" : "Unrestricted Upload of File with Dangerous Type in Gogs",
  "details" : "### Impact\n\nThe malicious user is able to upload a crafted `config` file into repository's `.git` directory with to gain SSH access to the server. All installations with [repository upload enabled (default)](https://github.com/gogs/gogs/blob/f36eeedbf89328ee70cc3a2e239f6314f9021f58/conf/app.ini#L127-L129) are affected.\n\n### Patches\n\nRepository file uploads are prohibited to its `.git` directory. Users should upgrade to 0.12.6 or the latest 0.13.0+dev.\n\n### Workarounds\n\n[Disable repository files upload](https://github.com/gogs/gogs/blob/f36eeedbf89328ee70cc3a2e239f6314f9021f58/conf/app.ini#L128-L129).\n\n### References\n\nhttps://huntr.dev/bounties/b4928cfe-4110-462f-a180-6d5673797902/\n\n### For more information\n\nIf you have any questions or comments about this advisory, please post on #6833.\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "gogs.io/gogs"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.12.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/gogs/gogs/security/advisories/GHSA-5gjh-5j4f-cpwv"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-0415"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/gogs/gogs/issues/6833"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/gogs/gogs/pull/6838"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/gogs/gogs/commit/0fef3c9082269e9a4e817274942a5d7c50617284"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/gogs/gogs"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.dev/bounties/b4928cfe-4110-462f-a180-6d5673797902"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20", "CWE-434" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-03-28T16:46:41Z",
    "nvd_published_at" : "2022-03-21T11:15:00Z"
  }
}