Vulnerability-Lookup

GHSA-XHQQ-X44F-9FGG

Vulnerability from github – Published: 2022-02-11 23:58 – Updated: 2021-05-21 21:11

Summary

Authentication Bypass in github.com/russellhaering/gosaml2

Details

Impact

Given a valid SAML Response, it may be possible for an attacker to mutate the XML document in such a way that gosaml2 will trust a different portion of the document than was signed.

Depending on the implementation of the Service Provider this enables a variety of attacks, including users accessing accounts other than the one to which they authenticated in the Identity Provider, or full authentication bypass.

Patches

Service Providers utilizing gosaml2 should upgrade to v0.6.0 or greater.

Severity

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/russellhaering/gosaml2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2020-29509"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-115"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-05-21T21:11:37Z",
    "nvd_published_at": "2020-12-14T20:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "### Impact\nGiven a valid SAML Response, it may be possible for an attacker to mutate the XML document in such a way that gosaml2 will trust a different portion of the document than was signed.\n\nDepending on the implementation of the Service Provider this enables a variety of attacks, including users accessing accounts other than the one to which they authenticated in the Identity Provider, or full authentication bypass.\n\n### Patches\nService Providers utilizing gosaml2 should upgrade to v0.6.0 or greater.",
  "id": "GHSA-xhqq-x44f-9fgg",
  "modified": "2021-05-21T21:11:37Z",
  "published": "2022-02-11T23:58:09Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/russellhaering/gosaml2/security/advisories/GHSA-xhqq-x44f-9fgg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-29509"
    },
    {
      "type": "WEB",
      "url": "https://github.com/russellhaering/gosaml2/commit/42606dafba60c58c458f14f75c4c230459672ab9"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md"
    },
    {
      "type": "WEB",
      "url": "https://pkg.go.dev/vuln/GO-2021-0060"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20210129-0006"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Authentication Bypass in github.com/russellhaering/gosaml2"
}

CVE-2020-29509 (GCVE-0-2020-29509)

Vulnerability from cvelistv5 – Published: 2020-12-14 20:02 – Updated: 2024-09-17 03:43

Summary

The encoding/xml package in Go (all versions) does not correctly preserve the semantics of attribute namespace prefixes during tokenization round-trips, which allows an attacker to craft inputs that behave in conflicting ways during different stages of processing in affected downstream applications.

Severity

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-115 - Misinterpretation of Input

Assigner

Mattermost mitre root

References

2 references

URL	Tags
https://github.com/mattermost/xml-roundtrip-valid…	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2021012…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
Golang	Go	Affected: All versions

Date Public

2020-12-14 00:00

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.