CVE-2018-17031: Gogs.io/gogs Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-px5r-fqj6-r2f8
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CVSS 6.1
CWE-79
Published
Advisory Summary

CVE-2018-17031 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Gogs.io/gogs libraries in the Go ecosystem. The issue involves gogs xss vulnerability. Remediation is available by upgrading affected packages to version 0.12.0.

CVE-2018-17031 at a Glance

CVE Identifier CVE-2018-17031
GHSA Identifier GHSA-px5r-fqj6-r2f8
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
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-2018-17031

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-2018-17031, 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. 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 0.11.53, an attacker can use a crafted .eml file to trigger MIME type sniffing, which leads to XSS, as demonstrated by Internet Explorer, because an "X-Content-Type-Options: nosniff" header is not sent.

CVE-2018-17031 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-2018-17031 NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-17031
Gogs.io/gogs Source Repository REPOSITORY
https://github.com/gogs/gogs/issues/5397
Gogs.io/gogs Source Repository REPOSITORY
https://github.com/gogs/gogs/pull/6008
Security Fix Commit FIX COMMIT
https://github.com/gogs/gogs/commit/e14b6abf9dae13bc087c9d9db8fe7c7a5125c792
Gogs.io/gogs Source Repository REPOSITORY
https://github.com/gogs/gogs

Frequently Asked Questions

What is CVE-2018-17031?
CVE-2018-17031 is a security vulnerability in Gogs.io/gogs involving Gogs XSS Vulnerability under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
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-2018-17031?
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-2018-17031?
CVE-2018-17031 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-2018-17031?
CVE-2018-17031 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Go dependencies for CVE-2018-17031?
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-px5r-fqj6-r2f8",
  "modified" : "2023-10-06T16:24:06Z",
  "published" : "2022-05-14T02:01:21Z",
  "aliases" : [ "CVE-2018-17031" ],
  "summary" : "Gogs XSS Vulnerability",
  "details" : "In Gogs 0.11.53, an attacker can use a crafted .eml file to trigger MIME type sniffing, which leads to XSS, as demonstrated by Internet Explorer, because an \"X-Content-Type-Options: nosniff\" header is not sent.",
  "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"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 0.11.53"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2018-17031"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/gogs/gogs/issues/5397"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/gogs/gogs/pull/6008"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/gogs/gogs/commit/e14b6abf9dae13bc087c9d9db8fe7c7a5125c792"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/gogs/gogs"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-25T20:11:37Z",
    "nvd_published_at" : "2018-09-14T02:29:00Z"
  }
}