FKIE_CVE-2009-1786

Vulnerability from fkie_nvd - Published: 2009-05-26 15:30 - Updated: 2026-06-16 23:08
Severity
Summary
The malloc subsystem in libc in IBM AIX 5.3 and 6.1 allows local users to create or overwrite arbitrary files via a symlink attack on the log file associated with the MALLOCDEBUG environment variable.
References
cve@mitre.orghttp://aix.software.ibm.com/aix/efixes/security/libc_advisory.ascPatch, Vendor Advisory
cve@mitre.orghttp://labs.idefense.com/intelligence/vulnerabilities/display.php?id=802
cve@mitre.orghttp://secunia.com/advisories/35146Vendor Advisory
cve@mitre.orghttp://securitytracker.com/id?1022261Patch
cve@mitre.orghttp://www.ibm.com/support/docview.wss?uid=isg1IZ50121
cve@mitre.orghttp://www.ibm.com/support/docview.wss?uid=isg1IZ50129
cve@mitre.orghttp://www.ibm.com/support/docview.wss?uid=isg1IZ50139
cve@mitre.orghttp://www.ibm.com/support/docview.wss?uid=isg1IZ50445
cve@mitre.orghttp://www.ibm.com/support/docview.wss?uid=isg1IZ50447
cve@mitre.orghttp://www.ibm.com/support/docview.wss?uid=isg1IZ50500
cve@mitre.orghttp://www.ibm.com/support/docview.wss?uid=isg1IZ50517
cve@mitre.orghttp://www.osvdb.org/54617
cve@mitre.orghttp://www.securityfocus.com/bid/35034
cve@mitre.orghttp://www.vupen.com/english/advisories/2009/1380Vendor Advisory
cve@mitre.orghttps://exchange.xforce.ibmcloud.com/vulnerabilities/50636
cve@mitre.orghttps://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6276
cve@mitre.orghttps://www.exploit-db.com/exploits/9306
af854a3a-2127-422b-91ae-364da2661108http://aix.software.ibm.com/aix/efixes/security/libc_advisory.ascPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=802
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/35146Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://securitytracker.com/id?1022261Patch
af854a3a-2127-422b-91ae-364da2661108http://www.ibm.com/support/docview.wss?uid=isg1IZ50121
af854a3a-2127-422b-91ae-364da2661108http://www.ibm.com/support/docview.wss?uid=isg1IZ50129
af854a3a-2127-422b-91ae-364da2661108http://www.ibm.com/support/docview.wss?uid=isg1IZ50139
af854a3a-2127-422b-91ae-364da2661108http://www.ibm.com/support/docview.wss?uid=isg1IZ50445
af854a3a-2127-422b-91ae-364da2661108http://www.ibm.com/support/docview.wss?uid=isg1IZ50447
af854a3a-2127-422b-91ae-364da2661108http://www.ibm.com/support/docview.wss?uid=isg1IZ50500
af854a3a-2127-422b-91ae-364da2661108http://www.ibm.com/support/docview.wss?uid=isg1IZ50517
af854a3a-2127-422b-91ae-364da2661108http://www.osvdb.org/54617
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/35034
af854a3a-2127-422b-91ae-364da2661108http://www.vupen.com/english/advisories/2009/1380Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/50636
af854a3a-2127-422b-91ae-364da2661108https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6276
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/9306
Impacted products
Vendor Product Version
ibm aix 5.3
ibm aix 6.1
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:ibm:aix:5.3:*:*:*:*:*:*:*",
              "matchCriteriaId": "EA8DDF4A-1C5D-4CB1-95B3-69EAE6572507",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:ibm:aix:6.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "FD518B94-9CD7-4C45-8766-578CF427B4CF",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The malloc subsystem in libc in IBM AIX 5.3 and 6.1 allows local users to create or overwrite arbitrary files via a symlink attack on the log file associated with the MALLOCDEBUG environment variable."
    },
    {
      "lang": "es",
      "value": "El subsistema malloc en libc en IBM AIX v5.3 y v6.1 permite a usuarios locales crear o sobrescribir ficheros de forma arbitraria a trav\u00e9s de un ataque de enlace simb\u00f3lico en el fichero log asociado con la variable de entorno MALLOCDEBUG."
    }
  ],
  "id": "CVE-2009-1786",
  "lastModified": "2026-06-16T23:08:03.400",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 6.9,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 3.4,
        "impactScore": 10.0,
        "obtainAllPrivilege": true,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ]
  },
  "published": "2009-05-26T15:30:05.390",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "http://aix.software.ibm.com/aix/efixes/security/libc_advisory.asc"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=802"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://secunia.com/advisories/35146"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch"
      ],
      "url": "http://securitytracker.com/id?1022261"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.ibm.com/support/docview.wss?uid=isg1IZ50121"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.ibm.com/support/docview.wss?uid=isg1IZ50129"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.ibm.com/support/docview.wss?uid=isg1IZ50139"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.ibm.com/support/docview.wss?uid=isg1IZ50445"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.ibm.com/support/docview.wss?uid=isg1IZ50447"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.ibm.com/support/docview.wss?uid=isg1IZ50500"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.ibm.com/support/docview.wss?uid=isg1IZ50517"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.osvdb.org/54617"
    },
    {
      "source": "cve@mitre.org",
      "url": "http://www.securityfocus.com/bid/35034"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://www.vupen.com/english/advisories/2009/1380"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/50636"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6276"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://www.exploit-db.com/exploits/9306"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "http://aix.software.ibm.com/aix/efixes/security/libc_advisory.asc"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=802"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://secunia.com/advisories/35146"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "http://securitytracker.com/id?1022261"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.ibm.com/support/docview.wss?uid=isg1IZ50121"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.ibm.com/support/docview.wss?uid=isg1IZ50129"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.ibm.com/support/docview.wss?uid=isg1IZ50139"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.ibm.com/support/docview.wss?uid=isg1IZ50445"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.ibm.com/support/docview.wss?uid=isg1IZ50447"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.ibm.com/support/docview.wss?uid=isg1IZ50500"
    },
    {
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      "url": "http://www.ibm.com/support/docview.wss?uid=isg1IZ50517"
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.osvdb.org/54617"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.securityfocus.com/bid/35034"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "http://www.vupen.com/english/advisories/2009/1380"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/50636"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6276"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.exploit-db.com/exploits/9306"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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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.


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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.