CVE-2024-3096 (GCVE-0-2024-3096)

Vulnerability from cvelistv5 – Published: 2024-04-29 03:42 – Updated: 2025-11-04 17:19
VLAI
Title
PHP function password_verify can erroneously return true when argument contains NUL
Summary
In PHP  version 8.1.* before 8.1.28, 8.2.* before 8.2.18, 8.3.* before 8.3.5, if a password stored with password_hash() starts with a null byte (\x00), testing a blank string as the password via password_verify() will incorrectly return true.
Severity
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-04-29 15:14 UTC
CWE
  • CWE-20 - Improper Input Validation
Assigner
php CNA under the mitre root
CNA scorecard B 81/100 over 27 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
PHP Group PHP Affected: 8.1.* , < 8.1.28 (semver)
Affected: 8.2.* , < 8.2.18 (semver)
Affected: 8.3.* , < 8.3.5 (semver)
guessed Create a notification for this product.
php_group php Affected: 8.1.0
    cpe:2.3:a:php_group:php:8.1.0:*:*:*:*:*:*:*
Create a notification for this product.
php_group php Affected: 8.2.0
    cpe:2.3:a:php_group:php:8.2.0:*:*:*:*:*:*:*
Create a notification for this product.
php_group php Affected: 8.3.0
    cpe:2.3:a:php_group:php:8.3.0:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2024-04-11 22:59
Credits
Eric Stern
Show details on NVD website
To clipboard 

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                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2024-04-29T15:14:15.199723Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2024-04-29T15:17:34.528Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "affected",
              "product": "PHP",
              "vendor": "PHP Group",
              "versions": [
                {
                  "lessThan": "8.1.28",
                  "status": "affected",
                  "version": "8.1.*",
                  "versionType": "semver"
                },
                {
                  "lessThan": "8.2.18",
                  "status": "affected",
                  "version": "8.2.*",
                  "versionType": "semver"
                },
                {
                  "lessThan": "8.3.5",
                  "status": "affected",
                  "version": "8.3.*",
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          ],
          "credits": [
            {
              "lang": "en",
              "type": "reporter",
              "value": "Eric Stern"
            }
          ],
          "datePublic": "2024-04-11T22:59:00.000Z",
          "descriptions": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "\u003cp\u003eIn PHP\u0026nbsp; version 8.1.* before 8.1.28, 8.2.* before 8.2.18, 8.3.* before 8.3.5, if\u0026nbsp;a password stored with password_hash() starts with a null byte (\\x00), testing a blank string as the password via password_verify() will incorrectly return true.\u003c/p\u003e"
                }
              ],
              "value": "In PHP\u00a0 version 8.1.* before 8.1.28, 8.2.* before 8.2.18, 8.3.* before 8.3.5, if\u00a0a password stored with password_hash() starts with a null byte (\\x00), testing a blank string as the password via password_verify() will incorrectly return true."
            }
          ],
          "impacts": [
            {
              "capecId": "CAPEC-52",
              "descriptions": [
                {
                  "lang": "en",
                  "value": "CAPEC-52 Embedding NULL Bytes"
                }
              ]
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 6.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "NONE",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
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              },
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              "scenarios": [
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                  "lang": "en",
                  "value": "GENERAL"
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              ]
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          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-20",
                  "description": "CWE-20 Improper Input Validation",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2024-06-10T17:09:44.676Z",
            "orgId": "dd77f84a-d19a-4638-8c3d-a322d820ed2b",
            "shortName": "php"
          },
          "references": [
            {
              "url": "https://github.com/php/php-src/security/advisories/GHSA-h746-cjrr-wfmr"
            },
            {
              "url": "http://www.openwall.com/lists/oss-security/2024/04/12/11"
            },
            {
              "url": "https://lists.debian.org/debian-lts-announce/2024/05/msg00005.html"
            },
            {
              "url": "https://security.netapp.com/advisory/ntap-20240510-0010/"
            }
          ],
          "source": {
            "advisory": "https://github.com/php/php-src/security/advisories/GHSA-h746-cjr",
            "discovery": "EXTERNAL"
          },
          "title": "PHP function password_verify can erroneously return true when argument contains NUL",
          "workarounds": [
            {
              "lang": "en",
              "supportingMedia": [
                {
                  "base64": false,
                  "type": "text/html",
                  "value": "Pre-filter potential password strings to ensure they do not contain NUL bytes.\u0026nbsp;"
                }
              ],
              "value": "Pre-filter potential password strings to ensure they do not contain NUL bytes."
            }
          ],
          "x_generator": {
            "engine": "Vulnogram 0.1.0-dev"
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        }
      },
      "cveMetadata": {
        "assignerOrgId": "dd77f84a-d19a-4638-8c3d-a322d820ed2b",
        "assignerShortName": "php",
        "cveId": "CVE-2024-3096",
        "datePublished": "2024-04-29T03:42:04.093Z",
        "dateReserved": "2024-03-29T16:57:27.435Z",
        "dateUpdated": "2025-11-04T17:19:57.320Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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