CVE-2013-5018 (GCVE-0-2013-5018)

Vulnerability from cvelistv5 – Published: 2013-08-28 17:18 – Updated: 2024-08-06 16:59
VLAI
Summary
The is_asn1 function in strongSwan 4.1.11 through 5.0.4 does not properly validate the return value of the asn1_length function, which allows remote attackers to cause a denial of service (segmentation fault) via a (1) XAuth username, (2) EAP identity, or (3) PEM encoded file that starts with a 0x04, 0x30, or 0x31 character followed by an ASN.1 length value that triggers an integer overflow.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
mitre CNA under the mitre root
CNA scorecard E 28/100 over 2291 records in the last 180 days details
References
URL Tags
http://secunia.com/advisories/54315 third-party-advisoryx_refsource_SECUNIA
http://www.securityfocus.com/bid/61564 vdb-entryx_refsource_BID
http://secunia.com/advisories/54524 third-party-advisoryx_refsource_SECUNIA
http://strongswan.org/blog/2013/08/01/strongswan-… x_refsource_CONFIRM
http://lists.opensuse.org/opensuse-updates/2013-0… vendor-advisoryx_refsource_SUSE
http://strongswan.org/blog/2013/08/01/strongswan-… x_refsource_CONFIRM
http://lists.opensuse.org/opensuse-updates/2013-0… vendor-advisoryx_refsource_SUSE
https://lists.strongswan.org/pipermail/users/2013… mailing-listx_refsource_MLIST
http://lists.opensuse.org/opensuse-updates/2013-0… vendor-advisoryx_refsource_SUSE
Date Public
2013-07-29 00:00
Show details on NVD website
To clipboard 

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                    "criteria": "cpe:2.3:o:opensuse:opensuse:12.3:*:*:*:*:*:*:*",
                    "matchCriteriaId": "DFBF430B-0832-44B0-AA0E-BA9E467F7668",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "The is_asn1 function in strongSwan 4.1.11 through 5.0.4 does not properly validate the return value of the asn1_length function, which allows remote attackers to cause a denial of service (segmentation fault) via a (1) XAuth username, (2) EAP identity, or (3) PEM encoded file that starts with a 0x04, 0x30, or 0x31 character followed by an ASN.1 length value that triggers an integer overflow."
          },
          {
            "lang": "es",
            "value": "La funci\u00f3n  is_asn1 en strongSwan v4.1.11 hasta v5.0.4 no valida correctamente el valor de retorno de la funci\u00f3n asn1_length, lo que permite a atacantes remotos provocar una denegaci\u00f3n de servicio (corrupci\u00f3n de memoria) a trav\u00e9s de (1) nombre de usuario XAuth, (2) identidad EAP, o (3) la codificaci\u00f3n PEM de un fichero que comienza con los caracteres \"0x04, 0x30, o 0x31\" seguidos por un valor de tama\u00f1o ASN.1 que dispara un desbordamiento de enteros."
          }
        ],
        "id": "CVE-2013-5018",
        "lastModified": "2026-04-29T01:13:23.040",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 4.3,
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 8.6,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ]
        },
        "published": "2013-08-28T23:55:10.650",
        "references": [
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-updates/2013-08/msg00021.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-updates/2013-08/msg00022.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-updates/2013-08/msg00050.html"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://secunia.com/advisories/54315"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://secunia.com/advisories/54524"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://strongswan.org/blog/2013/08/01/strongswan-5.1.0-released.html"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://strongswan.org/blog/2013/08/01/strongswan-denial-of-service-vulnerability-%28cve-2013-5018%29.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "http://www.securityfocus.com/bid/61564"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Exploit"
            ],
            "url": "https://lists.strongswan.org/pipermail/users/2013-July/009540.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-updates/2013-08/msg00021.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-updates/2013-08/msg00022.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-updates/2013-08/msg00050.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://secunia.com/advisories/54315"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://secunia.com/advisories/54524"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://strongswan.org/blog/2013/08/01/strongswan-5.1.0-released.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://strongswan.org/blog/2013/08/01/strongswan-denial-of-service-vulnerability-%28cve-2013-5018%29.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securityfocus.com/bid/61564"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Exploit"
            ],
            "url": "https://lists.strongswan.org/pipermail/users/2013-July/009540.html"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-119"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2025-11-21T12:39:34+00:00",
      "cve": "CVE-2013-5018",
      "id": "CVE-2013-5018",
      "initial_release_date": "2013-08-01T00:00:00+00:00",
      "product_status:known_not_affected": "5",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "strongswan: denial of service flaw in 5.0.3/5.0.4",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2013/cve-2013-5018.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-08-27T02:02:16Z",
      "cve": "CVE-2013-5018",
      "id": "CVE-2013-5018",
      "initial_release_date": "2023-02-15T05:35:16Z",
      "product_status:known_not_affected": "51",
      "product_status:recommended": "205",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2013-5018",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2013-5018.json",
      "version": "12"
    }
  }
}



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Sightings

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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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON
How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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