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CVE-2011-4623 (GCVE-0-2011-4623)

Vulnerability from cvelistv5 – Published: 2012-09-25 23:00 – Updated: 2024-08-07 00:09
VLAI
Summary
Integer overflow in the rsCStrExtendBuf function in runtime/stringbuf.c in the imfile module in rsyslog 4.x before 4.6.6, 5.x before 5.7.4, and 6.x before 6.1.4 allows local users to cause a denial of service (daemon hang) via a large file, which triggers a heap-based buffer overflow.
Severity
No CVSS data available.
CWE
  • n/a
References
Date Public
2011-02-09 00:00
Show details on NVD website

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          "value": "Integer overflow in the rsCStrExtendBuf function in runtime/stringbuf.c in the imfile module in rsyslog 4.x before 4.6.6, 5.x before 5.7.4, and 6.x before 6.1.4 allows local users to cause a denial of service (daemon hang) via a large file, which triggers a heap-based buffer overflow."
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          "lang": "es",
          "value": "Desbordamiento de entero en la funci\u00f3n rsCStrExtendBuf en runtime/stringbuf.c en el m\u00f3dulo imfile en rsyslog v4.x anteriores v4.6.6, v5.x anteriores a v5.7.4, y v6.x anteriores a v6.1.4, permite a atacantes remotos provocar una denegaci\u00f3n de servicio (cuelgue del demonio) a trav\u00e9s de un fichero grande, que provoca un desbordamiento de b\u00fafer basado en memoria din\u00e1mica."
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        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Integer overflow in the rsCStrExtendBuf function in runtime/stringbuf.c in the imfile module in rsyslog 4.x before 4.6.6, 5.x before 5.7.4, and 6.x before 6.1.4 allows local users to cause a denial of service (daemon hang) via a large file, which triggers a heap-based buffer overflow."
          },
          {
            "lang": "es",
            "value": "Desbordamiento de entero en la funci\u00f3n rsCStrExtendBuf en runtime/stringbuf.c en el m\u00f3dulo imfile en rsyslog v4.x anteriores v4.6.6, v5.x anteriores a v5.7.4, y v6.x anteriores a v6.1.4, permite a atacantes remotos provocar una denegaci\u00f3n de servicio (cuelgue del demonio) a trav\u00e9s de un fichero grande, que provoca un desbordamiento de b\u00fafer basado en memoria din\u00e1mica."
          }
        ],
        "id": "CVE-2011-4623",
        "lastModified": "2026-04-29T01:13:23.040",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "LOW",
              "cvssData": {
                "accessComplexity": "LOW",
                "accessVector": "LOCAL",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 2.1,
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
                "version": "2.0"
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              "exploitabilityScore": 3.9,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
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        "published": "2012-09-25T23:55:01.033",
        "references": [
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        "weaknesses": [
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              {
                "lang": "en",
                "value": "CWE-189"
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    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T12:50:40+00:00",
      "cve": "CVE-2011-4623",
      "id": "CVE-2011-4623",
      "initial_release_date": "2011-02-09T00:00:00+00:00",
      "product_status:fixed": "264",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "rsyslog: DoS due integer signedness error while extending rsyslog counted string buffer",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2011/cve-2011-4623.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-05-02T01:39:22Z",
      "cve": "CVE-2011-4623",
      "id": "CVE-2011-4623",
      "initial_release_date": "2023-02-15T05:49:47Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2011-4623",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2011-4623.json",
      "version": "3"
    }
  }
}



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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.

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Detection rules are retrieved from Rulezet.

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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.


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