CVE-2022-41912: Github.com/crewjam/saml Crewjam/saml Vulnerable To Signature Bypass Vulnerability

CRITICAL
Advisory Identifier: GHSA-j2jp-wvqg-wc2g
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CVSS 9.1
CWE-287
Published
Advisory Summary

CVE-2022-41912 is a CRITICAL (CVSS 9.1) crewjam/saml vulnerable to signature bypass vulnerability (CWE-287: Improper Authentication) affecting Github.com/crewjam/saml libraries in the Go ecosystem. The issue involves crewjam/saml vulnerable to signature bypass via multiple assertion elements due to improper authentication. Remediation is available by upgrading affected packages to version 0.4.9.

CVE-2022-41912 at a Glance

CVE Identifier CVE-2022-41912
GHSA Identifier GHSA-j2jp-wvqg-wc2g
Severity CRITICAL
CVSS v3.1 Base Score 9.1
CWE Classification CWE-287: Improper Authentication
Affected Product Github.com/crewjam/saml
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 9.1

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

How to Fix CVE-2022-41912

To remediate this vulnerability, upgrade all affected Github.com/crewjam/saml 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/crewjam/saml fixed: 0.4.9 
Upgrade github.com/crewjam/saml to 0.4.9
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/crewjam/saml

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-41912, inspect your project dependencies for Github.com/crewjam/saml:

inspect dependencies for github.com/crewjam/saml

Analyze the terminal output to locate any version of Github.com/crewjam/saml in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.4.9), 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-287: Improper Authentication, where when an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. In Github.com/crewjam/saml, 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 The crewjam/saml go library is vulnerable to an authentication bypass when processing SAML responses containing multiple Assertion elements. ### Patches This issue has been corrected in version 0.4.9. ### Credit This issue was reported by Felix Wilhelm from Google Project Zero.

CVE-2022-41912 Affected Github.com/crewjam/saml Versions

1 component(s)
Fixed Versions:
0.4.9
Product / Package Ecosystem Affected Versions Fixed Version
github.com/crewjam/saml
golang/github.com/crewjam/saml
Go
< 0.4.9
0.4.9

References

NVD — CVE-2022-41912 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-41912
GitHub Advisory / Wiki ADVISORY
https://github.com/crewjam/saml/security/advisories/GHSA-j2jp-wvqg-wc2g
GitHub Advisory / Wiki ADVISORY
https://github.com/prometheus/exporter-toolkit/security/advisories/GHSA-7rg2-cxvp-9p7p
Security Fix Commit FIX COMMIT
https://github.com/crewjam/saml/commit/aee3fb1edeeaf1088fcb458727e0fd863d277f8b
Github.com/crewjam/saml Source Repository REPOSITORY
https://github.com/crewjam/saml
Github.com/crewjam/saml Release RELEASE
https://github.com/crewjam/saml/releases/tag/v0.4.9
pkg.go.dev/vuln/go-2022-1129 WEB
https://pkg.go.dev/vuln/GO-2022-1129
Github.com/crewjam/saml Security Information SECURITY
http://packetstormsecurity.com/files/170356/crewjam-saml-Signature-Bypass.html

Frequently Asked Questions

What is CVE-2022-41912?
CVE-2022-41912 is a security vulnerability in Github.com/crewjam/saml involving crewjam/saml vulnerable to signature bypass via multiple Assertion elements due to improper authentication under CWE-287: Improper Authentication.
Which Github.com/crewjam/saml versions are affected?
Affected versions include releases prior to 0.4.9 across affected packages: github.com/crewjam/saml.
What version fixes CVE-2022-41912?
Upgrading to 0.4.9 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/crewjam/saml affected?
Yes, github.com/crewjam/saml is affected in releases prior to 0.4.9. Upgrade your dependency to 0.4.9 or later.
What is the CVSS score of CVE-2022-41912?
CVE-2022-41912 has a CVSS v3.1 base score of 9.1 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2022-41912?
CVE-2022-41912 is classified under CWE-287: Improper Authentication (When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.).
How can I check Go dependencies for CVE-2022-41912?
Run the dependency tree command: 'inspect dependencies for github.com/crewjam/saml'. 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-j2jp-wvqg-wc2g",
  "modified" : "2022-12-01T22:13:04Z",
  "published" : "2022-11-29T23:55:54Z",
  "aliases" : [ "CVE-2022-41912" ],
  "summary" : "crewjam/saml vulnerable to signature bypass via multiple Assertion elements due to improper authentication",
  "details" : "### Impact\n\nThe crewjam/saml go library is vulnerable to an authentication bypass when processing SAML responses containing multiple Assertion elements.\n\n### Patches\n\nThis issue has been corrected in version 0.4.9.\n\n### Credit\n\nThis issue was reported by Felix Wilhelm from Google Project Zero.\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/crewjam/saml"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.4.9"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/crewjam/saml/security/advisories/GHSA-j2jp-wvqg-wc2g"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/prometheus/exporter-toolkit/security/advisories/GHSA-7rg2-cxvp-9p7p"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-41912"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/crewjam/saml/commit/aee3fb1edeeaf1088fcb458727e0fd863d277f8b"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/crewjam/saml"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/crewjam/saml/releases/tag/v0.4.9"
  }, {
    "type" : "WEB",
    "url" : "https://pkg.go.dev/vuln/GO-2022-1129"
  }, {
    "type" : "WEB",
    "url" : "http://packetstormsecurity.com/files/170356/crewjam-saml-Signature-Bypass.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-287" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-11-29T23:55:54Z",
    "nvd_published_at" : "2022-11-28T15:15:00Z"
  }
}