Vulnerability-Lookup

CVE-2020-15693 (GCVE-0-2020-15693)

Vulnerability from cvelistv5 – Published: 2020-08-14 18:47 – Updated: 2024-08-04 13:22

Summary

In Nim 1.2.4, the standard library httpClient is vulnerable to a CR-LF injection in the target URL. An injection is possible if the attacker controls any part of the URL provided in a call (such as httpClient.get or httpClient.post), the User-Agent header value, or custom HTTP header names or values.

Severity

6.5 (Medium)


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

CWE

Assigner

mitre mitre root

References

4 references

URL	Tags
https://github.com/nim-lang/Nim/blob/dc5a40f3f39c…	x_refsource_MISC
https://nim-lang.org/blog/2020/07/30/versions-126…	x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2021/02/04/2	mailing-listx_refsource_MLIST
https://consensys.net/diligence/vulnerabilities/n…	x_refsource_MISC

Date Public

2020-07-30 00:00

Show details on NVD website

JSON

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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2020-15693",
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FKIE_CVE-2020-15693

Vulnerability from fkie_nvd - Published: 2020-08-14 19:15 - Updated: 2026-06-17 02:57

Severity

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Summary

References

URL	Tags
cve@mitre.org	http://www.openwall.com/lists/oss-security/2021/02/04/2	Exploit, Mailing List, Third Party Advisory
cve@mitre.org	https://consensys.net/diligence/vulnerabilities/nim-httpclient-header-crlf-injection/	Exploit, Third Party Advisory
cve@mitre.org	https://github.com/nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/httpclient.nim#L1023	Patch, Third Party Advisory
cve@mitre.org	https://nim-lang.org/blog/2020/07/30/versions-126-and-108-released.html	Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://www.openwall.com/lists/oss-security/2021/02/04/2	Exploit, Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://consensys.net/diligence/vulnerabilities/nim-httpclient-header-crlf-injection/	Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://github.com/nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/httpclient.nim#L1023	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://nim-lang.org/blog/2020/07/30/versions-126-and-108-released.html	Release Notes, Third Party Advisory

Impacted products

	Vendor	Product	Version
	nim-lang	nim	*

JSON

To clipboard

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        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://consensys.net/diligence/vulnerabilities/nim-httpclient-header-crlf-injection/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/httpclient.nim#L1023"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "url": "https://nim-lang.org/blog/2020/07/30/versions-126-and-108-released.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2021/02/04/2"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "url": "https://consensys.net/diligence/vulnerabilities/nim-httpclient-header-crlf-injection/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/httpclient.nim#L1023"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes",
        "Third Party Advisory"
      ],
      "url": "https://nim-lang.org/blog/2020/07/30/versions-126-and-108-released.html"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-74"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GSD-2020-15693

Vulnerability from gsd - Updated: 2023-12-13 01:21

Details

Aliases

CVE-2020-15693

Aliases

CVE-2020-15693

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2020-15693",
    "description": "In Nim 1.2.4, the standard library httpClient is vulnerable to a CR-LF injection in the target URL. An injection is possible if the attacker controls any part of the URL provided in a call (such as httpClient.get or httpClient.post), the User-Agent header value, or custom HTTP header names or values.",
    "id": "GSD-2020-15693",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-15693.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-15693"
      ],
      "details": "In Nim 1.2.4, the standard library httpClient is vulnerable to a CR-LF injection in the target URL. An injection is possible if the attacker controls any part of the URL provided in a call (such as httpClient.get or httpClient.post), the User-Agent header value, or custom HTTP header names or values.",
      "id": "GSD-2020-15693",
      "modified": "2023-12-13T01:21:43.796855Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2020-15693",
        "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": "In Nim 1.2.4, the standard library httpClient is vulnerable to a CR-LF injection in the target URL. An injection is possible if the attacker controls any part of the URL provided in a call (such as httpClient.get or httpClient.post), the User-Agent header value, or custom HTTP header names or values."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/httpclient.nim#L1023",
            "refsource": "MISC",
            "url": "https://github.com/nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/httpclient.nim#L1023"
          },
          {
            "name": "https://nim-lang.org/blog/2020/07/30/versions-126-and-108-released.html",
            "refsource": "CONFIRM",
            "url": "https://nim-lang.org/blog/2020/07/30/versions-126-and-108-released.html"
          },
          {
            "name": "[oss-security] 20210204 [CVE-2020-15693, CVE-2020-15694] Nim - stdlib Httpclient - Header Crlf Injection \u0026 Server Response Validation",
            "refsource": "MLIST",
            "url": "http://www.openwall.com/lists/oss-security/2021/02/04/2"
          },
          {
            "name": "https://consensys.net/diligence/vulnerabilities/nim-httpclient-header-crlf-injection/",
            "refsource": "MISC",
            "url": "https://consensys.net/diligence/vulnerabilities/nim-httpclient-header-crlf-injection/"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:nim-lang:nim:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "1.2.6",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-15693"
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        "description": {
          "description_data": [
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              "lang": "en",
              "value": "In Nim 1.2.4, the standard library httpClient is vulnerable to a CR-LF injection in the target URL. An injection is possible if the attacker controls any part of the URL provided in a call (such as httpClient.get or httpClient.post), the User-Agent header value, or custom HTTP header names or values."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-74"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://nim-lang.org/blog/2020/07/30/versions-126-and-108-released.html",
              "refsource": "CONFIRM",
              "tags": [
                "Release Notes",
                "Third Party Advisory"
              ],
              "url": "https://nim-lang.org/blog/2020/07/30/versions-126-and-108-released.html"
            },
            {
              "name": "https://github.com/nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/httpclient.nim#L1023",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/httpclient.nim#L1023"
            },
            {
              "name": "[oss-security] 20210204 [CVE-2020-15693, CVE-2020-15694] Nim - stdlib Httpclient - Header Crlf Injection \u0026 Server Response Validation",
              "refsource": "MLIST",
              "tags": [
                "Exploit",
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "http://www.openwall.com/lists/oss-security/2021/02/04/2"
            },
            {
              "name": "https://consensys.net/diligence/vulnerabilities/nim-httpclient-header-crlf-injection/",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Third Party Advisory"
              ],
              "url": "https://consensys.net/diligence/vulnerabilities/nim-httpclient-header-crlf-injection/"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 6.4,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 4.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 2.5
        }
      },
      "lastModifiedDate": "2021-02-08T20:42Z",
      "publishedDate": "2020-08-14T19:15Z"
    }
  }
}

OPENSUSE-SU-2022:10095-1

Vulnerability from csaf_opensuse - Published: 2022-08-24 02:33 - Updated: 2022-08-24 02:33

Summary

Security update for nim

Severity

Important

Scope

9 vulnerabilities in this advisory, including CVE-2020-15693.

CVE-2020-15693

6.5 (Medium)


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

Recommended: 6 products

Open the full advisory

OPENSUSE-SU-2022:10101-1

Vulnerability from csaf_opensuse - Published: 2022-08-27 12:33 - Updated: 2022-08-27 12:33

Summary

Security update for nim

Severity

Important

Scope

9 vulnerabilities in this advisory, including CVE-2020-15693.

CVE-2020-15693

6.5 (Medium)


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

Recommended: 6 products

Open the full advisory

OPENSUSE-SU-2024:12253-1

Vulnerability from csaf_opensuse - Published: 2024-06-15 00:00 - Updated: 2024-06-15 00:00

Summary

nim-1.6.6-3.1 on GA media

Severity

Moderate

Scope

6 vulnerabilities in this advisory, including CVE-2020-15693.

CVE-2020-15693

6.5 (Medium)


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

Recommended: 4 products

Open the full advisory

ubuntu-cve-2020-15693

Vulnerability from osv_ubuntu

Published

2020-08-14 19:15

Modified

2025-10-24 04:48

Summary

Details

Severity

6.5 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2020-15693	REPORT
	https://github.com/nim-lang/Nim/blob/dc5a40f3f39c…	REPORT
	https://nim-lang.org/blog/2020/07/30/versions-126…	REPORT
	https://www.cve.org/CVERecord?id=CVE-2020-15693	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "nim",
            "binary_version": "0.12.0-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "nim",
        "purl": "pkg:deb/ubuntu/nim@0.12.0-2?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.11.2+dfsg1-4",
        "0.12.0-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "nim",
            "binary_version": "0.17.2-1ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "nim",
        "purl": "pkg:deb/ubuntu/nim@0.17.2-1ubuntu2?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.17.2-1ubuntu1",
        "0.17.2-1ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "nim",
            "binary_version": "1.0.6-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "nim",
        "purl": "pkg:deb/ubuntu/nim@1.0.6-1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.20.2-1",
        "1.0.2-1",
        "1.0.3~rc-1",
        "1.0.4-1",
        "1.0.6-1"
      ]
    }
  ],
  "aliases": [],
  "details": "In Nim 1.2.4, the standard library httpClient is vulnerable to a CR-LF injection in the target URL. An injection is possible if the attacker controls any part of the URL provided in a call (such as httpClient.get or httpClient.post), the User-Agent header value, or custom HTTP header names or values.",
  "id": "UBUNTU-CVE-2020-15693",
  "modified": "2025-10-24T04:48:37Z",
  "published": "2020-08-14T19:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-15693"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/nim-lang/Nim/blob/dc5a40f3f39c6ea672e6dc6aca7f8118a69dda99/lib/pure/httpclient.nim#L1023"
    },
    {
      "type": "REPORT",
      "url": "https://nim-lang.org/blog/2020/07/30/versions-126-and-108-released.html"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-15693"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-15693"
  ]
}

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.

Action not permitted

CVE-2020-15693 (GCVE-0-2020-15693)

FKIE_CVE-2020-15693

GSD-2020-15693

OPENSUSE-SU-2022:10095-1

OPENSUSE-SU-2022:10101-1

OPENSUSE-SU-2024:12253-1

ubuntu-cve-2020-15693

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature

Related by attack behaviour