Vulnerability-Lookup

UBUNTU-CVE-2017-11173 (CVE-2017-11173)

Vulnerability from osv_ubuntu – Published: 2017-07-13 03:29 – Updated: 2025-07-18 16:44 – Source website

Details

Missing anchor in generated regex for rack-cors before 0.4.1 allows a malicious third-party site to perform CORS requests. If the configuration were intended to allow only the trusted example.com domain name and not the malicious example.net domain name, then example.com.example.net (as well as example.com-example.net) would be inadvertently allowed.

Severity

8.8 (High)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2017-11173	REPORT
	http://seclists.org/fulldisclosure/2017/Jul/22	REPORT
	https://github.com/cyu/rack-cors/commit/42ebe6caa…	REPORT
	https://packetstormsecurity.com/files/143345/rack…	REPORT
	https://www.cve.org/CVERecord?id=CVE-2017-11173	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ruby-rack-cors",
            "binary_version": "0.4.0-1+deb9u1build0.16.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "ruby-rack-cors",
        "purl": "pkg:deb/ubuntu/ruby-rack-cors@0.4.0-1+deb9u1build0.16.04.1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.4.0-1+deb9u1build0.16.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.4.0-1"
      ]
    }
  ],
  "aliases": [],
  "details": "Missing anchor in generated regex for rack-cors before 0.4.1 allows a malicious third-party site to perform CORS requests. If the configuration were intended to allow only the trusted example.com domain name and not the malicious example.net domain name, then example.com.example.net (as well as example.com-example.net) would be inadvertently allowed.",
  "id": "UBUNTU-CVE-2017-11173",
  "modified": "2025-07-18T16:44:03Z",
  "published": "2017-07-13T03:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-11173"
    },
    {
      "type": "REPORT",
      "url": "http://seclists.org/fulldisclosure/2017/Jul/22"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/cyu/rack-cors/commit/42ebe6caa8e85ffa9c8a171bda668ba1acc7a5e6"
    },
    {
      "type": "REPORT",
      "url": "https://packetstormsecurity.com/files/143345/rack-cors-Missing-Anchor.html"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2017-11173"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2017-11173"
  ]
}

CVE-2017-11173 (GCVE-0-2017-11173)

Vulnerability from cvelistv5 – Published: 2017-07-13 03:00 – Updated: 2024-08-05 17:57

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root Scorecard

References

4 references

URL	Tags
http://seclists.org/fulldisclosure/2017/Jul/22	x_refsource_MISC
https://packetstormsecurity.com/files/143345/rack…	x_refsource_MISC
https://github.com/cyu/rack-cors/commit/42ebe6caa…	x_refsource_MISC
http://www.debian.org/security/2017/dsa-3931	vendor-advisoryx_refsource_DEBIAN

Date Public

2017-07-12 00:00

Show details on NVD website

JSON

To clipboard

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          },
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            "url": "https://packetstormsecurity.com/files/143345/rack-cors-Missing-Anchor.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/cyu/rack-cors/commit/42ebe6caa8e85ffa9c8a171bda668ba1acc7a5e6"
          },
          {
            "name": "DSA-3931",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "http://www.debian.org/security/2017/dsa-3931"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
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        "dateUpdated": "2017-11-03T18:57:01.000Z",
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          "url": "https://packetstormsecurity.com/files/143345/rack-cors-Missing-Anchor.html"
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        {
          "name": "DSA-3931",
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          "url": "http://www.debian.org/security/2017/dsa-3931"
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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.

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.

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Action not permitted

UBUNTU-CVE-2017-11173 (CVE-2017-11173)

CVE-2017-11173 (GCVE-0-2017-11173)

Tags

Sightings

Nomenclature

Related by attack behaviour