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CVE-2012-2138

Status: ModifiedMedium (5)—

The @CopyFrom operation in the POST servlet in the org.apache.sling.servlets.post bundle before 2.1.2 in Apache Sling does not prevent attempts to copy an ancestor node to a descendant node, which allows remote attackers to cause a denial of service (infinite loop) via a crafted HTTP request.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Apache — Org.apache.sling.servlets.post

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2012-2138",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2012-07-09T22:55:01.027",
  "references": [
    {
      "url": "http://mail-archives.apache.org/mod_mbox/www-announce/201207.mbox/%3CCAEWfVJ=PwoQmwJg0KmbrC17Gw51kgfKRsqgy=4RpMQsdGh0bVg%40mail.gmail.com%3E",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://svn.apache.org/viewvc?view=revision&revision=1352865",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://issues.apache.org/jira/browse/SLING-2517",
      "source": "secalert@redhat.com"
    },
    {
      "url": "http://mail-archives.apache.org/mod_mbox/www-announce/201207.mbox/%3CCAEWfVJ=PwoQmwJg0KmbrC17Gw51kgfKRsqgy=4RpMQsdGh0bVg%40mail.gmail.com%3E",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "http://svn.apache.org/viewvc?view=revision&revision=1352865",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://issues.apache.org/jira/browse/SLING-2517",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-264"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The @CopyFrom operation in the POST servlet in the org.apache.sling.servlets.post bundle before 2.1.2 in Apache Sling does not prevent attempts to copy an ancestor node to a descendant node, which allows remote attackers to cause a denial of service (infinite loop) via a crafted HTTP request."
    },
    {
      "lang": "es",
      "value": "La operación @CopyFrom en el servlet POST en el conjunto org.apache.sling.servlets.post anteriores a v2.1.2 en Apache Sling no previene intentos de copia sobre un nodo de nivel superior sobre uno de nivel inferior, lo que permite a atacantes remotos provocar una denegación de servicio (bucle infinito) a través de una petición HTTP."
    }
  ],
  "lastModified": "2026-06-16T23:41:04.057",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:apache:org.apache.sling.servlets.post:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3D36B6C4-8CDD-4830-9FB6-C9194CEFA231",
              "versionEndIncluding": "2.1.0"
            },
            {
              "criteria": "cpe:2.3:a:apache:sling:*:*:*:*:*:*:*:*",
              "vulnerable": false,
              "matchCriteriaId": "7F5259B4-EB04-4093-9C5B-C52ED92F23E9"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}