CVE-2011-0520 (GCVE-0-2011-0520)

Vulnerability from cvelistv5 – Published: 2011-01-28 15:00 – Updated: 2024-08-06 21:58
VLAI
Summary
The compress_add_dlabel_points function in dns/Compress.c in MaraDNS 1.4.03, 1.4.05, and probably other versions allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a long DNS hostname with a large number of labels, which triggers a heap-based buffer overflow.
Severity
No CVSS data available.
CWE
  • n/a
References
URL Tags
http://www.vupen.com/english/advisories/2011/0699 vdb-entryx_refsource_VUPEN
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=610834 x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2011/01/24/1 mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2011/01/24/6 mailing-listx_refsource_MLIST
https://exchange.xforce.ibmcloud.com/vulnerabilit… vdb-entryx_refsource_XF
http://www.debian.org/security/2011/dsa-2196 vendor-advisoryx_refsource_DEBIAN
http://secunia.com/advisories/43107 third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/43027 third-party-advisoryx_refsource_SECUNIA
http://osvdb.org/70630 vdb-entryx_refsource_OSVDB
http://www.securityfocus.com/bid/45966 vdb-entryx_refsource_BID
Date Public
2011-01-23 00:00
Show details on NVD website

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          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.openwall.com/lists/oss-security/2011/01/24/6"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securityfocus.com/bid/45966"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.vupen.com/english/advisories/2011/0699"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/64885"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-119"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-06-27T15:33:03+00:00",
      "cve": "CVE-2011-0520",
      "id": "CVE-2011-0520",
      "initial_release_date": "2011-01-23T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "MaraDNS: Heap-based buffer overflow by processing long DNS hostname with a large number of labels",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2011/cve-2011-0520.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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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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