gsd-2023-23934
Vulnerability from gsd
Modified
2023-12-13 01:20
Details
Werkzeug is a comprehensive WSGI web application library. Browsers may allow "nameless" cookies that look like `=value` instead of `key=value`. A vulnerable browser may allow a compromised application on an adjacent subdomain to exploit this to set a cookie like `=__Host-test=bad` for another subdomain. Werkzeug prior to 2.2.3 will parse the cookie `=__Host-test=bad` as __Host-test=bad`. If a Werkzeug application is running next to a vulnerable or malicious subdomain which sets such a cookie using a vulnerable browser, the Werkzeug application will see the bad cookie value but the valid cookie key. The issue is fixed in Werkzeug 2.2.3.
Aliases
Aliases
CVE-2023-23934


To clipboard 

{
  "GSD": {
    "alias": "CVE-2023-23934",
    "id": "GSD-2023-23934",
    "references": [
      "https://access.redhat.com/errata/RHSA-2023:1018",
      "https://www.suse.com/security/cve/CVE-2023-23934.html",
      "https://ubuntu.com/security/CVE-2023-23934"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-23934"
      ],
      "details": "Werkzeug is a comprehensive WSGI web application library. Browsers may allow \"nameless\" cookies that look like `=value` instead of `key=value`. A vulnerable browser may allow a compromised application on an adjacent subdomain to exploit this to set a cookie like `=__Host-test=bad` for another subdomain. Werkzeug prior to 2.2.3 will parse the cookie `=__Host-test=bad` as __Host-test=bad`. If a Werkzeug application is running next to a vulnerable or malicious subdomain which sets such a cookie using a vulnerable browser, the Werkzeug application will see the bad cookie value but the valid cookie key. The issue is fixed in Werkzeug 2.2.3.",
      "id": "GSD-2023-23934",
      "modified": "2023-12-13T01:20:50.283016Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2023-23934",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "werkzeug",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "=",
                          "version_value": "\u003c 2.2.3"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "pallets"
            }
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        }
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      "description": {
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            "value": "Werkzeug is a comprehensive WSGI web application library. Browsers may allow \"nameless\" cookies that look like `=value` instead of `key=value`. A vulnerable browser may allow a compromised application on an adjacent subdomain to exploit this to set a cookie like `=__Host-test=bad` for another subdomain. Werkzeug prior to 2.2.3 will parse the cookie `=__Host-test=bad` as __Host-test=bad`. If a Werkzeug application is running next to a vulnerable or malicious subdomain which sets such a cookie using a vulnerable browser, the Werkzeug application will see the bad cookie value but the valid cookie key. The issue is fixed in Werkzeug 2.2.3."
          }
        ]
      },
      "impact": {
        "cvss": [
          {
            "attackComplexity": "HIGH",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 2.6,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N",
            "version": "3.1"
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "cweId": "CWE-20",
                "lang": "eng",
                "value": "CWE-20: Improper Input Validation"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22q",
            "refsource": "MISC",
            "url": "https://github.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22q"
          },
          {
            "name": "https://github.com/pallets/werkzeug/commit/cf275f42acad1b5950c50ffe8ef58fe62cdce028",
            "refsource": "MISC",
            "url": "https://github.com/pallets/werkzeug/commit/cf275f42acad1b5950c50ffe8ef58fe62cdce028"
          },
          {
            "name": "https://github.com/pallets/werkzeug/releases/tag/2.2.3",
            "refsource": "MISC",
            "url": "https://github.com/pallets/werkzeug/releases/tag/2.2.3"
          },
          {
            "name": "https://www.debian.org/security/2023/dsa-5470",
            "refsource": "MISC",
            "url": "https://www.debian.org/security/2023/dsa-5470"
          },
          {
            "name": "https://security.netapp.com/advisory/ntap-20230818-0003/",
            "refsource": "MISC",
            "url": "https://security.netapp.com/advisory/ntap-20230818-0003/"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-px8h-6qxv-m22q",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c2.2.3",
          "affected_versions": "All versions before 2.2.3",
          "cvss_v3": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-20",
            "CWE-937"
          ],
          "date": "2023-08-18",
          "description": "Werkzeug is a comprehensive WSGI web application library. Browsers may allow \"nameless\" cookies that look like `=value` instead of `key=value`. A vulnerable browser may allow a compromised application on an adjacent subdomain to exploit this to set a cookie like `=__Host-test=bad` for another subdomain. Werkzeug prior to 2.2.3 will parse the cookie `=__Host-test=bad` as __Host-test=bad`. If a Werkzeug application is running next to a vulnerable or malicious subdomain which sets such a cookie using a vulnerable browser, the Werkzeug application will see the bad cookie value but the valid cookie key. The issue is fixed in Werkzeug 2.2.3.",
          "fixed_versions": [
            "2.2.3"
          ],
          "identifier": "CVE-2023-23934",
          "identifiers": [
            "CVE-2023-23934",
            "GHSA-px8h-6qxv-m22q"
          ],
          "not_impacted": "All versions starting from 2.2.3",
          "package_slug": "pypi/Werkzeug",
          "pubdate": "2023-02-14",
          "solution": "Upgrade to version 2.2.3 or above.",
          "title": "Incorrect parsing of nameless cookies leads to __Host- cookies bypass",
          "urls": [
            "https://github.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22q",
            "https://nvd.nist.gov/vuln/detail/CVE-2023-23934",
            "https://github.com/pallets/werkzeug/commit/cf275f42acad1b5950c50ffe8ef58fe62cdce028",
            "https://github.com/pallets/werkzeug/releases/tag/2.2.3",
            "https://github.com/advisories/GHSA-px8h-6qxv-m22q"
          ],
          "uuid": "bf7afccb-1205-4b3f-b647-08dbebccbfe2"
        }
      ]
    },
    "nvd.nist.gov": {
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        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:palletsprojects:werkzeug:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "2.2.3",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
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          "ID": "CVE-2023-23934"
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        "description": {
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              "value": "Werkzeug is a comprehensive WSGI web application library. Browsers may allow \"nameless\" cookies that look like `=value` instead of `key=value`. A vulnerable browser may allow a compromised application on an adjacent subdomain to exploit this to set a cookie like `=__Host-test=bad` for another subdomain. Werkzeug prior to 2.2.3 will parse the cookie `=__Host-test=bad` as __Host-test=bad`. If a Werkzeug application is running next to a vulnerable or malicious subdomain which sets such a cookie using a vulnerable browser, the Werkzeug application will see the bad cookie value but the valid cookie key. The issue is fixed in Werkzeug 2.2.3."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
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              "description": [
                {
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        "references": {
          "reference_data": [
            {
              "name": "https://github.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22q",
              "refsource": "MISC",
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                "Vendor Advisory"
              ],
              "url": "https://github.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22q"
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              "name": "https://github.com/pallets/werkzeug/commit/cf275f42acad1b5950c50ffe8ef58fe62cdce028",
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              "tags": [
                "Patch"
              ],
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            },
            {
              "name": "https://github.com/pallets/werkzeug/releases/tag/2.2.3",
              "refsource": "MISC",
              "tags": [
                "Release Notes"
              ],
              "url": "https://github.com/pallets/werkzeug/releases/tag/2.2.3"
            },
            {
              "name": "https://www.debian.org/security/2023/dsa-5470",
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              "tags": [],
              "url": "https://www.debian.org/security/2023/dsa-5470"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20230818-0003/",
              "refsource": "MISC",
              "tags": [],
              "url": "https://security.netapp.com/advisory/ntap-20230818-0003/"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.5,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.1,
          "impactScore": 1.4
        }
      },
      "lastModifiedDate": "2023-08-18T14:15Z",
      "publishedDate": "2023-02-14T20:15Z"
    }
  }
}


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