CVE-2020-14958: Gogs.io/gogs Insecure Permissions Vulnerability

MODERATE
Advisory Identifier: GHSA-4c7m-vv47-7c69
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CVSS 5.3
CWE-281
Published
Advisory Summary

CVE-2020-14958 is a MODERATE (CVSS 5.3) insecure permissions vulnerability (CWE-281: Improper Preservation of Permissions) affecting Gogs.io/gogs libraries in the Go ecosystem. The issue involves insecure permissions in gogs. Remediation is available by upgrading affected packages to version 0.12.0.

CVE-2020-14958 at a Glance

CVE Identifier CVE-2020-14958
GHSA Identifier GHSA-4c7m-vv47-7c69
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-281: Improper Preservation of Permissions
Affected Product Gogs.io/gogs
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 5.3

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:L/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 Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2020-14958

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: 0.12.0 
Upgrade gogs.io/gogs to 0.12.0
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 gogs.io/gogs

How to Check if You Are Affected

To determine whether your application is affected by CVE-2020-14958, 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 0.12.0), 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-281: Improper Preservation of Permissions, where the product does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended. 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

In Gogs 0.11.91, MakeEmailPrimary in models/user_mail.go lacks a "not the owner of the email" check.

CVE-2020-14958 Affected Gogs.io/gogs Versions

1 component(s)
Fixed Versions:
0.12.0
Product / Package Ecosystem Affected Versions Fixed Version
gogs.io/gogs
golang/gogs.io/gogs
Go
< 0.12.0
0.12.0

References

NVD — CVE-2020-14958 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-14958
Gogs.io/gogs Source Repository REPOSITORY
https://github.com/gogs/gogs/pull/5988
Security Fix Commit FIX COMMIT
https://github.com/gogs/gogs/commit/82ff0c5852f29daa5f95d965fd50665581e7ea3c

Frequently Asked Questions

What is CVE-2020-14958?
CVE-2020-14958 is a security vulnerability in Gogs.io/gogs involving Insecure Permissions in Gogs under CWE-281: Improper Preservation of Permissions.
Which Gogs.io/gogs versions are affected?
Affected versions include releases prior to 0.12.0 across affected packages: gogs.io/gogs.
What version fixes CVE-2020-14958?
Upgrading to 0.12.0 (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 0.12.0. Upgrade your dependency to 0.12.0 or later.
What is the CVSS score of CVE-2020-14958?
CVE-2020-14958 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2020-14958?
CVE-2020-14958 is classified under CWE-281: Improper Preservation of Permissions (The product does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended.).
How can I check Go dependencies for CVE-2020-14958?
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-4c7m-vv47-7c69",
  "modified" : "2021-05-12T14:55:34Z",
  "published" : "2021-05-18T20:33:05Z",
  "aliases" : [ "CVE-2020-14958" ],
  "summary" : "Insecure Permissions in Gogs",
  "details" : "In Gogs 0.11.91, MakeEmailPrimary in models/user_mail.go lacks a \"not the owner of the email\" check.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "gogs.io/gogs"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.12.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-14958"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/gogs/gogs/pull/5988"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/gogs/gogs/commit/82ff0c5852f29daa5f95d965fd50665581e7ea3c"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-281" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-05-12T14:55:34Z",
    "nvd_published_at" : null
  }
}