{
  "id": "CVE-2023-41889",
  "sourceIdentifier": "security-advisories@github.com",
  "published": "2023-09-15T21:15:11.503",
  "lastModified": "2023-09-20T19:27:02.530",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "SHIRASAGI is a Content Management System. Prior to version 1.18.0, SHIRASAGI is vulnerable to a Post-Unicode normalization issue. This happens when a logical validation or a security check is performed before a Unicode normalization. The Unicode character equivalent of a character would resurface after the normalization. The fix is initially performing the Unicode normalization and then strip for all whitespaces and then checking for a blank string. This issue has been fixed in version 1.18.0.\n"
    },
    {
      "lang": "es",
      "value": "SHIRASAGI es un sistema de gesti\u00f3n de contenidos. Antes de la versi\u00f3n 1.18.0, SHIRASAGI era vulnerable a un problema de normalizaci\u00f3n posterior a Unicode. Esto sucede cuando se realiza una validaci\u00f3n l\u00f3gica o una verificaci\u00f3n de seguridad antes de una normalizaci\u00f3n Unicode. El car\u00e1cter Unicode equivalente a un car\u00e1cter resurgir\u00eda despu\u00e9s de la normalizaci\u00f3n. La soluci\u00f3n consiste inicialmente en realizar la normalizaci\u00f3n Unicode y luego eliminar todos los espacios en blanco y luego comprobar si hay una cadena en blanco. Este problema se solucion\u00f3 en la versi\u00f3n 1.18.0."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4
      },
      {
        "source": "security-advisories@github.com",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4
      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-116"
        }
      ]
    },
    {
      "source": "security-advisories@github.com",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-176"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:ss-proj:shirasagi:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "1.18.0",
              "matchCriteriaId": "96B19CE9-B96E-4A30-9053-7532F1EF6684"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/shirasagi/shirasagi/blob/f249ce3f06f6bfbc0017b38f5c13de424334c3ea/app/models/concerns/rdf/object.rb#L68-L72",
      "source": "security-advisories@github.com",
      "tags": [
        "Product"
      ]
    },
    {
      "url": "https://github.com/shirasagi/shirasagi/security/advisories/GHSA-xr45-c2jv-2v9r",
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://sim4n6.beehiiv.com/p/unicode-characters-bypass-security-checks",
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    }
  ]
}