GSD-2021-21707

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
In PHP versions 7.3.x below 7.3.33, 7.4.x below 7.4.26 and 8.0.x below 8.0.13, certain XML parsing functions, like simplexml_load_file(), URL-decode the filename passed to them. If that filename contains URL-encoded NUL character, this may cause the function to interpret this as the end of the filename, thus interpreting the filename differently from what the user intended, which may lead it to reading a different file than intended.
Aliases
Aliases
CVE-2021-21707
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{
  "GSD": {
    "alias": "CVE-2021-21707",
    "description": "In PHP versions 7.3.x below 7.3.33, 7.4.x below 7.4.26 and 8.0.x below 8.0.13, certain XML parsing functions, like simplexml_load_file(), URL-decode the filename passed to them. If that filename contains URL-encoded NUL character, this may cause the function to interpret this as the end of the filename, thus interpreting the filename differently from what the user intended, which may lead it to reading a different file than intended.",
    "id": "GSD-2021-21707",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-21707.html",
      "https://www.debian.org/security/2022/dsa-5082",
      "https://ubuntu.com/security/CVE-2021-21707",
      "https://advisories.mageia.org/CVE-2021-21707.html",
      "https://security.archlinux.org/CVE-2021-21707",
      "https://access.redhat.com/errata/RHSA-2022:5491",
      "https://access.redhat.com/errata/RHSA-2022:7628"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-21707"
      ],
      "details": "In PHP versions 7.3.x below 7.3.33, 7.4.x below 7.4.26 and 8.0.x below 8.0.13, certain XML parsing functions, like simplexml_load_file(), URL-decode the filename passed to them. If that filename contains URL-encoded NUL character, this may cause the function to interpret this as the end of the filename, thus interpreting the filename differently from what the user intended, which may lead it to reading a different file than intended.",
      "id": "GSD-2021-21707",
      "modified": "2023-12-13T01:23:10.925838Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security@php.net",
        "DATE_PUBLIC": "2021-11-15T15:31:00.000Z",
        "ID": "CVE-2021-21707",
        "STATE": "PUBLIC",
        "TITLE": "Special characters break path parsing in XML functions"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "PHP",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_name": "7.3.x",
                          "version_value": "7.3.33"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "7.4.x",
                          "version_value": "7.4.26"
                        },
                        {
                          "version_affected": "\u003c",
                          "version_name": "8.0.X",
                          "version_value": "8.0.13"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "PHP Group"
            }
          ]
        }
      },
      "credit": [
        {
          "lang": "eng",
          "value": "Reported by rawataman6525 at gmail dot com"
        }
      ],
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
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            "lang": "eng",
            "value": "In PHP versions 7.3.x below 7.3.33, 7.4.x below 7.4.26 and 8.0.x below 8.0.13, certain XML parsing functions, like simplexml_load_file(), URL-decode the filename passed to them. If that filename contains URL-encoded NUL character, this may cause the function to interpret this as the end of the filename, thus interpreting the filename differently from what the user intended, which may lead it to reading a different file than intended."
          }
        ]
      },
      "generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-159 Failure to Sanitize Special Element"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://bugs.php.net/bug.php?id=79971",
            "refsource": "MISC",
            "url": "https://bugs.php.net/bug.php?id=79971"
          },
          {
            "name": "https://security.netapp.com/advisory/ntap-20211223-0005/",
            "refsource": "CONFIRM",
            "url": "https://security.netapp.com/advisory/ntap-20211223-0005/"
          },
          {
            "name": "DSA-5082",
            "refsource": "DEBIAN",
            "url": "https://www.debian.org/security/2022/dsa-5082"
          },
          {
            "name": "https://www.tenable.com/security/tns-2022-09",
            "refsource": "CONFIRM",
            "url": "https://www.tenable.com/security/tns-2022-09"
          },
          {
            "name": "[debian-lts-announce] 20221215 [SECURITY] [DLA 3243-1] php7.3 security update",
            "refsource": "MLIST",
            "url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00030.html"
          }
        ]
      },
      "source": {
        "advisory": "https://bugs.php.net/bug.php?id=79971",
        "defect": [
          "https://bugs.php.net/bug.php?id=79971"
        ],
        "discovery": "EXTERNAL"
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
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            "cpe_match": [
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                "cpe_name": [],
                "versionEndExcluding": "8.0.13",
                "versionStartIncluding": "8.0.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "7.4.26",
                "versionStartIncluding": "7.4.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "7.3.33",
                "versionStartIncluding": "7.3.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
                "cpe_name": [],
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          },
          {
            "children": [],
            "cpe_match": [
              {
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                "cpe_name": [],
                "versionEndExcluding": "5.21.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
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      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security@php.net",
          "ID": "CVE-2021-21707"
        },
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        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "In PHP versions 7.3.x below 7.3.33, 7.4.x below 7.4.26 and 8.0.x below 8.0.13, certain XML parsing functions, like simplexml_load_file(), URL-decode the filename passed to them. If that filename contains URL-encoded NUL character, this may cause the function to interpret this as the end of the filename, thus interpreting the filename differently from what the user intended, which may lead it to reading a different file than intended."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "NVD-CWE-Other"
                }
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        },
        "references": {
          "reference_data": [
            {
              "name": "https://bugs.php.net/bug.php?id=79971",
              "refsource": "MISC",
              "tags": [
                "Exploit",
                "Issue Tracking",
                "Patch",
                "Release Notes",
                "Vendor Advisory"
              ],
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            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20211223-0005/",
              "refsource": "CONFIRM",
              "tags": [
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              ],
              "url": "https://security.netapp.com/advisory/ntap-20211223-0005/"
            },
            {
              "name": "DSA-5082",
              "refsource": "DEBIAN",
              "tags": [
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              "url": "https://www.debian.org/security/2022/dsa-5082"
            },
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              ],
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            },
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              "name": "[debian-lts-announce] 20221215 [SECURITY] [DLA 3243-1] php7.3 security update",
              "refsource": "MLIST",
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                "Mailing List"
              ],
              "url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00030.html"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 1.4
        }
      },
      "lastModifiedDate": "2023-02-16T03:07Z",
      "publishedDate": "2021-11-29T07:15Z"
    }
  }
}


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