Vulnerability-Lookup

GHSA-QC36-Q22Q-CJW3

Vulnerability from github – Published: 2021-07-12 17:03 – Updated: 2021-08-18 18:52

Summary

SMTP command injection in lettre

Details

Impact

Affected versions of lettre allowed SMTP command injection through an attacker's controlled message body. The module for escaping lines starting with a period wouldn't catch a period that was placed after a double CRLF sequence, allowing the attacker to end the current message and write arbitrary SMTP commands after it.

Fix

The flaw is fixed by correctly handling consecutive CRLF sequences.

References

RUSTSEC-2021-0069

Severity

9.8 (Critical)


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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "crates.io",
        "name": "lettre"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.7.0"
            },
            {
              "fixed": "0.9.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2021-38189"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-147"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2021-06-01T20:41:39Z",
    "nvd_published_at": "2021-08-08T06:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "### Impact\n\nAffected versions of lettre allowed SMTP command injection through an attacker\u0027s controlled message body. The module for escaping lines starting with a period wouldn\u0027t catch a period that was placed after a double CRLF sequence, allowing the attacker to end the current message and write arbitrary SMTP commands after it.\n\n### Fix\n\nThe flaw is fixed by correctly handling consecutive CRLF sequences.\n\n### References\n\n* [RUSTSEC-2021-0069](https://rustsec.org/advisories/RUSTSEC-2021-0069.html)\n\n\n\n",
  "id": "GHSA-qc36-q22q-cjw3",
  "modified": "2021-08-18T18:52:26Z",
  "published": "2021-07-12T17:03:27Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/lettre/lettre/security/advisories/GHSA-qc36-q22q-cjw3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lettre/lettre/pull/627/commits/93458d01fed0ec81c0e7b4e98e6f35961356fae2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lettre/lettre/commit/8bfc20506cc5e098fe6eb3d1cafe3bea791215ce"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/lettre/lettre"
    },
    {
      "type": "WEB",
      "url": "https://rustsec.org/advisories/RUSTSEC-2021-0069.html"
    }
  ],
  "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": "SMTP command injection in lettre"
}

CVE-2021-38189 (GCVE-0-2021-38189)

Vulnerability from cvelistv5 – Published: 2021-08-08 05:10 – Updated: 2024-08-04 01:37

Summary

An issue was discovered in the lettre crate before 0.9.6 for Rust. In an e-mail message body, an attacker can place a . character after two <CR><LF> sequences and then inject arbitrary SMTP commands.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2350 records in the last 180 days details

References

2 references

URL	Tags
https://rustsec.org/advisories/RUSTSEC-2021-0069.html	x_refsource_MISC
https://raw.githubusercontent.com/rustsec/advisor…	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T01:37:15.947Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://rustsec.org/advisories/RUSTSEC-2021-0069.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/lettre/RUSTSEC-2021-0069.md"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in the lettre crate before 0.9.6 for Rust. In an e-mail message body, an attacker can place a . character after two \u003cCR\u003e\u003cLF\u003e sequences and then inject arbitrary SMTP commands."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-08-08T05:10:12.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://rustsec.org/advisories/RUSTSEC-2021-0069.html"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/lettre/RUSTSEC-2021-0069.md"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2021-38189",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "An issue was discovered in the lettre crate before 0.9.6 for Rust. In an e-mail message body, an attacker can place a . character after two \u003cCR\u003e\u003cLF\u003e sequences and then inject arbitrary SMTP commands."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
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              "refsource": "MISC",
              "url": "https://rustsec.org/advisories/RUSTSEC-2021-0069.html"
            },
            {
              "name": "https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/lettre/RUSTSEC-2021-0069.md",
              "refsource": "MISC",
              "url": "https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/lettre/RUSTSEC-2021-0069.md"
            }
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  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-38189",
    "datePublished": "2021-08-08T05:10:12.000Z",
    "dateReserved": "2021-08-08T00:00:00.000Z",
    "dateUpdated": "2024-08-04T01:37:15.947Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

RUSTSEC-2021-0069 (GHSA-QC36-Q22Q-CJW3)

Vulnerability from osv_rustsec – Published: 2021-05-22 12:00 – Updated: 2021-10-19 19:56 – Source website

Summary

SMTP command injection in body

Details

The flaw is fixed by correctly handling consecutive CRLF sequences.

References

URL

Type

	https://crates.io/crates/lettre	PACKAGE
	https://rustsec.org/advisories/RUSTSEC-2021-0069.html	ADVISORY
	https://github.com/lettre/lettre/pull/627/commits…	WEB

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "format-injection"
        ],
        "cvss": null,
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [
            "lettre::smtp::SmtpTransport::send",
            "lettre::transport::smtp::SmtpTransport::send",
            "lettre::transport::smtp::SmtpTransport::send_raw"
          ],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "lettre",
        "purl": "pkg:cargo/lettre"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.7.0"
            },
            {
              "fixed": "0.9.6"
            },
            {
              "introduced": "0.10.0-alpha.1"
            },
            {
              "fixed": "0.10.0-rc.3"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "GHSA-qc36-q22q-cjw3",
    "CVE-2021-38189"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "Affected versions of lettre allowed SMTP command injection through an attacker\u0027s controlled message body. The module for escaping lines starting with a period wouldn\u0027t catch a period that was placed after a double CRLF sequence, allowing the attacker to end the current message and write arbitrary SMTP commands after it.\n\nThe flaw is fixed by correctly handling consecutive CRLF sequences.",
  "id": "RUSTSEC-2021-0069",
  "modified": "2021-10-19T19:56:47Z",
  "published": "2021-05-22T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/lettre"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2021-0069.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lettre/lettre/pull/627/commits/93458d01fed0ec81c0e7b4e98e6f35961356fae2"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "SMTP command injection in body"
}

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

Sightings and recorded dates, grouped by day · UTC

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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.
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Action not permitted

GHSA-QC36-Q22Q-CJW3

Impact

Fix

References

CVE-2021-38189 (GCVE-0-2021-38189)

RUSTSEC-2021-0069 (GHSA-QC36-Q22Q-CJW3)

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour