CVE-2018-15178: Gogs.io/gogs Open Redirect Vulnerability

MODERATE
Advisory Identifier: GHSA-cpgw-2wxr-pww3
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CVSS 6.1
CWE-601
Published
Advisory Summary

CVE-2018-15178 is a MODERATE (CVSS 6.1) open redirect vulnerability (CWE-601: URL Redirection to Untrusted Site ('Open Redirect')) affecting Gogs.io/gogs libraries in the Go ecosystem. The issue involves open redirect. Remediation is available by upgrading affected packages to version 0.12.0.

CVE-2018-15178 at a Glance

CVE Identifier CVE-2018-15178
GHSA Identifier GHSA-cpgw-2wxr-pww3
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-601: URL Redirection to Untrusted Site ('Open Redirect')
Affected Product Gogs.io/gogs
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 6.1

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2018-15178

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-2018-15178, 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-601: URL Redirection to Untrusted Site ('Open Redirect'), where the web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect. 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

Open redirect vulnerability in Gogs before 0.12 allows remote attackers to redirect users to arbitrary websites and conduct phishing attacks via an initial /\ substring in the user/login redirect_to parameter, related to the function isValidRedirect in routes/user/auth.go.

CVE-2018-15178 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-2018-15178 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-15178
Gogs.io/gogs Source Repository REPOSITORY
https://github.com/gogs/gogs/issues/5364
Gogs.io/gogs Source Repository REPOSITORY
https://github.com/gogs/gogs/pull/5365
Security Fix Commit FIX COMMIT
https://github.com/gogs/gogs/commit/1f247cf8139cb483276cd8dd06385a800ce9d4b2

Frequently Asked Questions

What is CVE-2018-15178?
CVE-2018-15178 is a security vulnerability in Gogs.io/gogs involving Open Redirect under CWE-601: URL Redirection to Untrusted Site ('Open Redirect').
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-2018-15178?
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-2018-15178?
CVE-2018-15178 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2018-15178?
CVE-2018-15178 is classified under CWE-601: URL Redirection to Untrusted Site ('Open Redirect') (The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.).
How can I check Go dependencies for CVE-2018-15178?
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-cpgw-2wxr-pww3",
  "modified" : "2021-05-20T20:55:39Z",
  "published" : "2021-06-29T18:32:39Z",
  "aliases" : [ "CVE-2018-15178" ],
  "summary" : "Open Redirect",
  "details" : "Open redirect vulnerability in Gogs before 0.12 allows remote attackers to redirect users to arbitrary websites and conduct phishing attacks via an initial /\\ substring in the user/login redirect_to parameter, related to the function isValidRedirect in routes/user/auth.go.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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-2018-15178"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/gogs/gogs/issues/5364"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/gogs/gogs/pull/5365"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/gogs/gogs/commit/1f247cf8139cb483276cd8dd06385a800ce9d4b2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-601" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-05-20T20:55:39Z",
    "nvd_published_at" : null
  }
}