CVE-2015-6835 (GCVE-0-2015-6835)

Vulnerability from cvelistv5 – Published: 2016-05-16 10:00 – Updated: 2024-08-06 07:36
VLAI
Summary
The session deserializer in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13 mishandles multiple php_var_unserialize calls, which allow remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via crafted session content.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
References
URL Tags
http://www.securityfocus.com/bid/76734 vdb-entryx_refsource_BID
https://bugs.php.net/bug.php?id=70219 x_refsource_CONFIRM
http://www.securitytracker.com/id/1033548 vdb-entryx_refsource_SECTRACK
http://php.net/ChangeLog-5.php x_refsource_CONFIRM
http://www.debian.org/security/2015/dsa-3358 vendor-advisoryx_refsource_DEBIAN
https://security.gentoo.org/glsa/201606-10 vendor-advisoryx_refsource_GENTOO
Date Public
2015-09-04 00:00
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-06T07:36:33.384Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "76734",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/76734"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://bugs.php.net/bug.php?id=70219"
          },
          {
            "name": "1033548",
            "tags": [
              "vdb-entry",
              "x_refsource_SECTRACK",
              "x_transferred"
            ],
            "url": "http://www.securitytracker.com/id/1033548"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://php.net/ChangeLog-5.php"
          },
          {
            "name": "DSA-3358",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "http://www.debian.org/security/2015/dsa-3358"
          },
          {
            "name": "GLSA-201606-10",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/201606-10"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2015-09-04T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The session deserializer in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13 mishandles multiple php_var_unserialize calls, which allow remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via crafted session content."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-01-06T16:15:43.000Z",
        "orgId": "f81092c5-7f14-476d-80dc-24857f90be84",
        "shortName": "microfocus"
      },
      "references": [
        {
          "name": "76734",
          "tags": [
            "vdb-entry",
            "x_refsource_BID"
          ],
          "url": "http://www.securityfocus.com/bid/76734"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://bugs.php.net/bug.php?id=70219"
        },
        {
          "name": "1033548",
          "tags": [
            "vdb-entry",
            "x_refsource_SECTRACK"
          ],
          "url": "http://www.securitytracker.com/id/1033548"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://php.net/ChangeLog-5.php"
        },
        {
          "name": "DSA-3358",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "http://www.debian.org/security/2015/dsa-3358"
        },
        {
          "name": "GLSA-201606-10",
          "tags": [
            "vendor-advisory",
            "x_refsource_GENTOO"
          ],
          "url": "https://security.gentoo.org/glsa/201606-10"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@microfocus.com",
          "ID": "CVE-2015-6835",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "The session deserializer in PHP before 5.4.45, 5.5.x before 5.5.29, and 5.6.x before 5.6.13 mishandles multiple php_var_unserialize calls, which allow remote attackers to execute arbitrary code or cause a denial of service (use-after-free) via crafted session content."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "76734",
              "refsource": "BID",
              "url": "http://www.securityfocus.com/bid/76734"
            },
            {
              "name": "https://bugs.php.net/bug.php?id=70219",
              "refsource": "CONFIRM",
              "url": "https://bugs.php.net/bug.php?id=70219"
            },
            {
              "name": "1033548",
              "refsource": "SECTRACK",
              "url": "http://www.securitytracker.com/id/1033548"
            },
            {
              "name": "http://php.net/ChangeLog-5.php",
              "refsource": "CONFIRM",
              "url": "http://php.net/ChangeLog-5.php"
            },
            {
              "name": "DSA-3358",
              "refsource": "DEBIAN",
              "url": "http://www.debian.org/security/2015/dsa-3358"
            },
            {
              "name": "GLSA-201606-10",
              "refsource": "GENTOO",
              "url": "https://security.gentoo.org/glsa/201606-10"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f81092c5-7f14-476d-80dc-24857f90be84",
    "assignerShortName": "microfocus",
    "cveId": "CVE-2015-6835",
    "datePublished": "2016-05-16T10:00:00.000Z",
    "dateReserved": "2015-09-08T00:00:00.000Z",
    "dateUpdated": "2024-08-06T07:36:33.384Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2015-6835",
      "date": "2026-10-03",
      "epss": "0.36163",
      "percentile": "0.98437"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.