CVE-2021-45326: Github.com/go gitea/gitea Cross Site Request Forgery Vulnerability

HIGH
Advisory Identifier: GHSA-4wp3-8q92-mh8w
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CVSS 8.8
CWE-352
Published
Advisory Summary

CVE-2021-45326 is a HIGH (CVSS 8.8) cross site request forgery vulnerability (CWE-352: Cross-Site Request Forgery (CSRF)) affecting Github.com/go gitea/gitea libraries in the Go ecosystem. The issue involves cross site request forgery in gitea. Remediation is available by upgrading affected packages to version 1.5.2.

CVE-2021-45326 at a Glance

CVE Identifier CVE-2021-45326
GHSA Identifier GHSA-4wp3-8q92-mh8w
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-352: Cross-Site Request Forgery (CSRF)
Affected Product Github.com/go gitea/gitea
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:N/UI:R/S:U/C:H/I:H/A:H).

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

How to Fix CVE-2021-45326

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

github.com/go-gitea/gitea fixed: 1.5.2 
Upgrade github.com/go-gitea/gitea to 1.5.2
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 github.com/go-gitea/gitea

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-45326, inspect your project dependencies for Github.com/go gitea/gitea:

inspect dependencies for github.com/go-gitea/gitea

Analyze the terminal output to locate any version of Github.com/go gitea/gitea in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.5.2), 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-352: Cross-Site Request Forgery (CSRF), where the web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor. In Github.com/go gitea/gitea, 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

Cross Site Request Forgery (CSRF) vulnerability exists in Gitea before 1.5.2 via API routes.This can be dangerous especially with state altering POST requests.

CVE-2021-45326 Affected Github.com/go gitea/gitea Versions

1 component(s)
Fixed Versions:
1.5.2
Product / Package Ecosystem Affected Versions Fixed Version
github.com/go-gitea/gitea
golang/github.com/go-gitea/gitea
Go
< 1.5.2
1.5.2

References

NVD — CVE-2021-45326 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-45326
Github.com/go gitea/gitea Source Repository REPOSITORY
https://github.com/go-gitea/gitea/issues/4838
Github.com/go gitea/gitea Source Repository REPOSITORY
https://github.com/go-gitea/gitea/pull/4840
blog.gitea.io/2018/10/gitea-1.5.2... WEB
https://blog.gitea.io/2018/10/gitea-1.5.2-is-released
Github.com/go gitea/gitea Source Repository REPOSITORY
https://github.com/go-gitea/gitea

Frequently Asked Questions

What is CVE-2021-45326?
CVE-2021-45326 is a security vulnerability in Github.com/go gitea/gitea involving Cross Site Request Forgery in Gitea under CWE-352: Cross-Site Request Forgery (CSRF).
Which Github.com/go gitea/gitea versions are affected?
Affected versions include releases prior to 1.5.2 across affected packages: github.com/go-gitea/gitea.
What version fixes CVE-2021-45326?
Upgrading to 1.5.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/go-gitea/gitea affected?
Yes, github.com/go-gitea/gitea is affected in releases prior to 1.5.2. Upgrade your dependency to 1.5.2 or later.
What is the CVSS score of CVE-2021-45326?
CVE-2021-45326 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2021-45326?
CVE-2021-45326 is classified under CWE-352: Cross-Site Request Forgery (CSRF) (The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.).
How can I check Go dependencies for CVE-2021-45326?
Run the dependency tree command: 'inspect dependencies for github.com/go-gitea/gitea'. 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-4wp3-8q92-mh8w",
  "modified" : "2023-09-15T20:20:04Z",
  "published" : "2022-02-09T00:00:29Z",
  "aliases" : [ "CVE-2021-45326" ],
  "summary" : "Cross Site Request Forgery in Gitea",
  "details" : "Cross Site Request Forgery (CSRF) vulnerability exists in Gitea before 1.5.2 via API routes.This can be dangerous especially with state altering POST requests.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/go-gitea/gitea"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.5.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-45326"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/go-gitea/gitea/issues/4838"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/go-gitea/gitea/pull/4840"
  }, {
    "type" : "WEB",
    "url" : "https://blog.gitea.io/2018/10/gitea-1.5.2-is-released"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/go-gitea/gitea"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-352" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-02-14T23:01:01Z",
    "nvd_published_at" : "2022-02-08T15:15:00Z"
  }
}