Vulnerability-Lookup

GHSA-M3PQ-M926-J2H4

Vulnerability from github – Published: 2022-05-24 19:19 – Updated: 2024-03-21 03:34

Details

Severity

8.3 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2021-42694"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1007",
      "CWE-94"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-11-01T04:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "An issue was discovered in the character definitions of the Unicode Specification through 14.0. The specification allows an adversary to produce source code identifiers such as function names using homoglyphs that render visually identical to a target identifier. Adversaries can leverage this to inject code via adversarial identifier definitions in upstream software dependencies invoked deceptively in downstream software.",
  "id": "GHSA-m3pq-m926-j2h4",
  "modified": "2024-03-21T03:34:08Z",
  "published": "2022-05-24T19:19:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-42694"
    },
    {
      "type": "WEB",
      "url": "https://cwe.mitre.org/data/definitions/1007.html"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202210-09"
    },
    {
      "type": "WEB",
      "url": "https://trojansource.codes"
    },
    {
      "type": "WEB",
      "url": "https://www.kb.cert.org/vuls/id/999008"
    },
    {
      "type": "WEB",
      "url": "https://www.scyon.nl/post/trojans-in-your-source-code"
    },
    {
      "type": "WEB",
      "url": "https://www.unicode.org/reports/tr36"
    },
    {
      "type": "WEB",
      "url": "https://www.unicode.org/reports/tr39"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2021/11/01/1"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2021/11/01/6"
    },
    {
      "type": "WEB",
      "url": "http://www.unicode.org/versions/Unicode14.0.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2021-42694 (GCVE-0-2021-42694)

Vulnerability from cvelistv5 – Published: 2021-11-01 00:00 – Updated: 2024-10-29 13:41 Disputed

Summary

An issue was discovered in the character definitions of the Unicode Specification through 14.0. The specification allows an adversary to produce source code identifiers such as function names using homoglyphs that render visually identical to a target identifier. Adversaries can leverage this to inject code via adversarial identifier definitions in upstream software dependencies invoked deceptively in downstream software. NOTE: the Unicode Consortium offers the following alternative approach to presenting this concern. An issue is noted in the nature of international text that can affect applications that implement support for The Unicode Standard (all versions). Unless mitigated, an adversary could produce source code identifiers using homoglyph characters that render visually identical to but are distinct from a target identifier. In this way, an adversary could inject adversarial identifier definitions in upstream software that are not detected by human reviewers and are invoked deceptively in downstream software. The Unicode Consortium has documented this class of security vulnerability in its document, Unicode Technical Report #36, Unicode Security Considerations. The Unicode Consortium also provides guidance on mitigations for this class of issues in Unicode Technical Standard #39, Unicode Security Mechanisms.

Severity

8.3 (High)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-07-18 17:31 UTC

CWE

n/a
CWE-94 - Improper Control of Generation of Code ('Code Injection')

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2261 records in the last 180 days details

References

10 references

URL	Tags
http://www.unicode.org/versions/Unicode14.0.0/
https://trojansource.codes
http://www.openwall.com/lists/oss-security/2021/11/01/1	mailing-list
http://www.openwall.com/lists/oss-security/2021/11/01/6	mailing-list
https://www.kb.cert.org/vuls/id/999008	third-party-advisory
https://www.scyon.nl/post/trojans-in-your-source-code
https://www.unicode.org/reports/tr36/
https://www.unicode.org/reports/tr39/
https://cwe.mitre.org/data/definitions/1007.html
https://security.gentoo.org/glsa/202210-09	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
unicode	unicode	Affected: 0 , < 14.0.0 (custom) cpe:2.3:a:unicode:unicode::::::::

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:unicode:unicode:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "unicode",
            "vendor": "unicode",
            "versions": [
              {
                "lessThan": "14.0.0",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 8.3,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "CHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2021-42694",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-07-18T17:31:01.226978Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-94",
                "description": "CWE-94 Improper Control of Generation of Code (\u0027Code Injection\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-29T13:41:17.179Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T03:38:50.055Z",
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            ],
            "url": "https://trojansource.codes"
          },
          {
            "name": "[oss-security] 20211101 CVE-2021-42574: rustc 1.56.0 and bidirectional-override codepoints in source code",
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              "mailing-list",
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            ],
            "url": "http://www.openwall.com/lists/oss-security/2021/11/01/1"
          },
          {
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            "tags": [
              "mailing-list",
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            "url": "http://www.openwall.com/lists/oss-security/2021/11/01/6"
          },
          {
            "name": "VU#999008",
            "tags": [
              "third-party-advisory",
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            "url": "https://www.scyon.nl/post/trojans-in-your-source-code"
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            "url": "https://www.unicode.org/reports/tr36/"
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            "tags": [
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            "url": "https://cwe.mitre.org/data/definitions/1007.html"
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            "name": "GLSA-202210-09",
            "tags": [
              "vendor-advisory",
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            ],
            "url": "https://security.gentoo.org/glsa/202210-09"
          }
        ],
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    "cna": {
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      ],
      "descriptions": [
        {
          "lang": "en",
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        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
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              "type": "text"
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      ],
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        "dateUpdated": "2022-10-16T00:00:00.000Z",
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      },
      "references": [
        {
          "url": "http://www.unicode.org/versions/Unicode14.0.0/"
        },
        {
          "url": "https://trojansource.codes"
        },
        {
          "name": "[oss-security] 20211101 CVE-2021-42574: rustc 1.56.0 and bidirectional-override codepoints in source code",
          "tags": [
            "mailing-list"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2021/11/01/1"
        },
        {
          "name": "[oss-security] 20211101 Trojan Source Attacks",
          "tags": [
            "mailing-list"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2021/11/01/6"
        },
        {
          "name": "VU#999008",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.kb.cert.org/vuls/id/999008"
        },
        {
          "url": "https://www.scyon.nl/post/trojans-in-your-source-code"
        },
        {
          "url": "https://www.unicode.org/reports/tr36/"
        },
        {
          "url": "https://www.unicode.org/reports/tr39/"
        },
        {
          "url": "https://cwe.mitre.org/data/definitions/1007.html"
        },
        {
          "name": "GLSA-202210-09",
          "tags": [
            "vendor-advisory"
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          "url": "https://security.gentoo.org/glsa/202210-09"
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    "dateReserved": "2021-10-18T00:00:00.000Z",
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    "state": "PUBLISHED"
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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.

Vulnerability timeline

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