CVE-2022-0871: Gogs.io/gogs Gogs Vulnerable To Improper PAM Vulnerability

HIGH
Advisory Identifier: GHSA-gw5h-h6hj-f56g
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CVSS 8.2
CWE-862
Published
Advisory Summary

CVE-2022-0871 is a HIGH (CVSS 8.2) gogs vulnerable to improper pam vulnerability (CWE-862: Missing Authorization) affecting Gogs.io/gogs libraries in the Go ecosystem. The issue involves gogs vulnerable to improper pam authorization handling. Remediation is available by upgrading affected packages to version 0.12.5.

CVE-2022-0871 at a Glance

CVE Identifier CVE-2022-0871
GHSA Identifier GHSA-gw5h-h6hj-f56g
Severity HIGH
CVSS v3.1 Base Score 8.2
CWE Classification CWE-862: Missing Authorization
Affected Product Gogs.io/gogs
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 8.2

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:N/S:U/C:H/I:L/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 High (C:H)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2022-0871

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: 0.12.5 
Upgrade gogs.io/gogs to 0.12.5
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-2022-0871, 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 0.12.5), 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-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. 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

### Impact Expired PAM accounts and accounts with expired passwords are continued to be seen as valid. Installations use PAM as authentication sources are affected. ### Patches Expired PAM accounts and accounts with expired passwords are no longer being seen as valid. Users should upgrade to 0.12.5 or the latest 0.13.0+dev. ### Workarounds In addition to marking PAM accounts as expired, also disable/lock them. Running `usermod -L <username>` will add an exclamation mark to the password hash and would result in wrong passwords responses when trying to login. ### References https://huntr.dev/bounties/ea82cfc9-b55c-41fe-ae58-0d0e0bd7ab62/ ### For more information If you have any questions or comments about this advisory, please post on https://github.com/gogs/gogs/issues/6810.

CVE-2022-0871 Affected Gogs.io/gogs Versions

1 component(s)
Fixed Versions:
0.12.5
Product / Package Ecosystem Affected Versions Fixed Version
gogs.io/gogs
golang/gogs.io/gogs
Go
< 0.12.5
0.12.5

References

GitHub Advisory / Wiki ADVISORY
https://github.com/gogs/gogs/security/advisories/GHSA-gw5h-h6hj-f56g
NVD — CVE-2022-0871 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-0871
Gogs.io/gogs Source Repository REPOSITORY
https://github.com/gogs/gogs/issues/6810
Security Fix Commit FIX COMMIT
https://github.com/gogs/gogs/commit/64102be2c90e1b47dbdd379873ba76c80d4b0e78
Gogs.io/gogs Source Repository REPOSITORY
https://github.com/gogs/gogs
huntr.dev/bounties/ea82cfc9-b... WEB
https://huntr.dev/bounties/ea82cfc9-b55c-41fe-ae58-0d0e0bd7ab62

Frequently Asked Questions

What is CVE-2022-0871?
CVE-2022-0871 is a security vulnerability in Gogs.io/gogs involving Gogs vulnerable to improper PAM authorization handling under CWE-862: Missing Authorization.
Which Gogs.io/gogs versions are affected?
Affected versions include releases prior to 0.12.5 across affected packages: gogs.io/gogs.
What version fixes CVE-2022-0871?
Upgrading to 0.12.5 (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 0.12.5. Upgrade your dependency to 0.12.5 or later.
What is the CVSS score of CVE-2022-0871?
CVE-2022-0871 has a CVSS v3.1 base score of 8.2 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.
What CWE is associated with CVE-2022-0871?
CVE-2022-0871 is classified under CWE-862: Missing Authorization (The product does not perform an authorization check when an actor attempts to access a resource or perform an action.).
How can I check Go dependencies for CVE-2022-0871?
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-gw5h-h6hj-f56g",
  "modified" : "2023-06-30T22:11:07Z",
  "published" : "2022-03-14T22:58:37Z",
  "aliases" : [ "CVE-2022-0871" ],
  "summary" : "Gogs vulnerable to improper PAM authorization handling",
  "details" : "### Impact\n\nExpired PAM accounts and accounts with expired passwords are continued to be seen as valid. Installations use PAM as authentication sources are affected.\n\n### Patches\n\nExpired PAM accounts and accounts with expired passwords are no longer being seen as valid. Users should upgrade to 0.12.5 or the latest 0.13.0+dev.\n\n### Workarounds\n\nIn addition to marking PAM accounts as expired, also disable/lock them. Running `usermod -L <username>` will add an exclamation mark to the password hash and would result in wrong passwords responses when trying to login. \n\n### References\n\nhttps://huntr.dev/bounties/ea82cfc9-b55c-41fe-ae58-0d0e0bd7ab62/\n\n### For more information\n\nIf you have any questions or comments about this advisory, please post on https://github.com/gogs/gogs/issues/6810.\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "gogs.io/gogs"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.12.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/gogs/gogs/security/advisories/GHSA-gw5h-h6hj-f56g"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-0871"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/gogs/gogs/issues/6810"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/gogs/gogs/commit/64102be2c90e1b47dbdd379873ba76c80d4b0e78"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/gogs/gogs"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.dev/bounties/ea82cfc9-b55c-41fe-ae58-0d0e0bd7ab62"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-862" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-03-14T22:58:37Z",
    "nvd_published_at" : null
  }
}