CVE-2021-3382: Github.com/go gitea/gitea Buffer Overflow Vulnerability

HIGH
Advisory Identifier: GHSA-9f8c-pfvv-p4gm
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CVSS 7.0
CWE-787
Published
Advisory Summary

CVE-2021-3382 is a HIGH (CVSS 7.0) buffer overflow vulnerability (CWE-787: Out-of-bounds Write) affecting Github.com/go gitea/gitea libraries in the Go ecosystem. The issue involves buffer overflow in gitea. Remediation is available by upgrading affected packages to version 1.13.2.

CVE-2021-3382 at a Glance

CVE Identifier CVE-2021-3382
GHSA Identifier GHSA-9f8c-pfvv-p4gm
Severity HIGH
CVSS v3.1 Base Score 7.0
CWE Classification CWE-787: Out-of-bounds Write
Affected Product Github.com/go gitea/gitea
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 7.0

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

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

How to Fix CVE-2021-3382

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: 1.13.2 
Upgrade github.com/go-gitea/gitea to 1.13.2
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-2021-3382, 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 1.13.2), 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-787: Out-of-bounds Write, where the product writes data past the end, or before the beginning, of the intended buffer. 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

Stack buffer overflow vulnerability in gitea 1.9.0 through 1.13.1 allows remote attackers to cause a denial of service (crash) via vectors related to a file path.

CVE-2021-3382 Affected Github.com/go gitea/gitea Versions

1 component(s)
Fixed Versions:
1.13.2
Product / Package Ecosystem Affected Versions Fixed Version
github.com/go-gitea/gitea
golang/github.com/go-gitea/gitea
Go
≥ 1.9.0
< 1.13.2
1.13.2

References

NVD — CVE-2021-3382 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3382
Github.com/go gitea/gitea Source Repository REPOSITORY
https://github.com/go-gitea/gitea/pull/14390
Github.com/go gitea/gitea Source Repository REPOSITORY
https://github.com/go-gitea/gitea

Frequently Asked Questions

What is CVE-2021-3382?
CVE-2021-3382 is a security vulnerability in Github.com/go gitea/gitea involving Buffer Overflow in gitea under CWE-787: Out-of-bounds Write.
Which Github.com/go gitea/gitea versions are affected?
Affected versions include releases prior to 1.13.2 across affected packages: github.com/go-gitea/gitea.
What version fixes CVE-2021-3382?
Upgrading to 1.13.2 (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 1.13.2. Upgrade your dependency to 1.13.2 or later.
What is the CVSS score of CVE-2021-3382?
CVE-2021-3382 has a CVSS v3.1 base score of 7.0 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H.
What CWE is associated with CVE-2021-3382?
CVE-2021-3382 is classified under CWE-787: Out-of-bounds Write (The product writes data past the end, or before the beginning, of the intended buffer.).
How can I check Go dependencies for CVE-2021-3382?
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-9f8c-pfvv-p4gm",
  "modified" : "2024-04-24T20:56:50Z",
  "published" : "2024-04-24T20:56:50Z",
  "aliases" : [ "CVE-2021-3382" ],
  "summary" : "Buffer Overflow in gitea",
  "details" : "Stack buffer overflow vulnerability in gitea 1.9.0 through 1.13.1 allows remote attackers to cause a denial of service (crash) via vectors related to a file path.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/go-gitea/gitea"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "1.9.0"
      }, {
        "fixed" : "1.13.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-3382"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/go-gitea/gitea/pull/14390"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/go-gitea/gitea"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-787" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-24T20:56:50Z",
    "nvd_published_at" : null
  }
}