FKIE_CVE-2015-6835

Vulnerability from fkie_nvd - Published: 2016-05-16 10:59 - Updated: 2025-04-12 10:46
Severity ?
9.8 (Critical) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
References
security@opentext.comhttp://php.net/ChangeLog-5.php
security@opentext.comhttp://www.debian.org/security/2015/dsa-3358
security@opentext.comhttp://www.securityfocus.com/bid/76734
security@opentext.comhttp://www.securitytracker.com/id/1033548
security@opentext.comhttps://bugs.php.net/bug.php?id=70219
security@opentext.comhttps://security.gentoo.org/glsa/201606-10
af854a3a-2127-422b-91ae-364da2661108http://php.net/ChangeLog-5.php
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2015/dsa-3358
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/76734
af854a3a-2127-422b-91ae-364da2661108http://www.securitytracker.com/id/1033548
af854a3a-2127-422b-91ae-364da2661108https://bugs.php.net/bug.php?id=70219
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/201606-10
Impacted products
Vendor Product Version
php php 5.6.0
php php 5.6.0
php php 5.6.0
php php 5.6.0
php php 5.6.0
php php 5.6.0
php php 5.6.0
php php 5.6.0
php php 5.6.0
php php 5.6.1
php php 5.6.2
php php 5.6.3
php php 5.6.4
php php 5.6.5
php php 5.6.6
php php 5.6.7
php php 5.6.8
php php 5.6.9
php php 5.6.10
php php 5.6.11
php php 5.6.12
php php *
php php 5.5.0
php php 5.5.0
php php 5.5.0
php php 5.5.0
php php 5.5.0
php php 5.5.0
php php 5.5.0
php php 5.5.0
php php 5.5.0
php php 5.5.0
php php 5.5.0
php php 5.5.0
php php 5.5.0
php php 5.5.1
php php 5.5.2
php php 5.5.3
php php 5.5.4
php php 5.5.5
php php 5.5.6
php php 5.5.7
php php 5.5.8
php php 5.5.9
php php 5.5.10
php php 5.5.11
php php 5.5.12
php php 5.5.13
php php 5.5.14
php php 5.5.15
php php 5.5.16
php php 5.5.17
php php 5.5.18
php php 5.5.19
php php 5.5.20
php php 5.5.21
php php 5.5.22
php php 5.5.23
php php 5.5.24
php php 5.5.25
php php 5.5.26
php php 5.5.27
php php 5.5.28
To clipboard 

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  "cveTags": [],
  "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."
    },
    {
      "lang": "es",
      "value": "La sesi\u00f3n deserializer en PHP en versiones anteriores a 5.4.45, 5.5.x en versiones anteriores a 5.5.29 y 5.6.x en versiones anteriores a 5.6.13 no es correctamente manejada en llamadas multiples php_var_unserialize, lo que permite a atacantes remotos ejecutar c\u00f3digo arbitrario o causar una denegaci\u00f3n del servicio (uso despu\u00e9s de liberaci\u00f3n de memoria) a trav\u00e9s de una sesi\u00f3n de contenido manipulada."
    }
  ],
  "evaluatorComment": "\u003ca href=\"http://cwe.mitre.org/data/definitions/416.html\"\u003eCWE-416: Use After Free\u003c/a\u003e",
  "id": "CVE-2015-6835",
  "lastModified": "2025-04-12T10:46:40.837",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
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          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
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    "cvssMetricV30": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
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          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2016-05-16T10:59:19.580",
  "references": [
    {
      "source": "security@opentext.com",
      "url": "http://php.net/ChangeLog-5.php"
    },
    {
      "source": "security@opentext.com",
      "url": "http://www.debian.org/security/2015/dsa-3358"
    },
    {
      "source": "security@opentext.com",
      "url": "http://www.securityfocus.com/bid/76734"
    },
    {
      "source": "security@opentext.com",
      "url": "http://www.securitytracker.com/id/1033548"
    },
    {
      "source": "security@opentext.com",
      "url": "https://bugs.php.net/bug.php?id=70219"
    },
    {
      "source": "security@opentext.com",
      "url": "https://security.gentoo.org/glsa/201606-10"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://php.net/ChangeLog-5.php"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.debian.org/security/2015/dsa-3358"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.securityfocus.com/bid/76734"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.securitytracker.com/id/1033548"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://bugs.php.net/bug.php?id=70219"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://security.gentoo.org/glsa/201606-10"
    }
  ],
  "sourceIdentifier": "security@opentext.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.