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CVE-2012-4658

Status: ModifiedMedium (5)—

The ios-authproxy implementation in Cisco IOS before 15.1(1)SY3 allows remote attackers to cause a denial of service (webauth and HTTP service outage) via vectors that trigger incorrectly terminated HTTP sessions, aka Bug ID CSCtz99447.

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)

Cisco — IOS

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2012-4658",
  "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": "psirt@cisco.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2014-04-23T11:52:59.150",
  "references": [
    {
      "url": "http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/15-1SY/release_notes.pdf",
      "source": "psirt@cisco.com"
    },
    {
      "url": "http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/15-1SY/release_notes.pdf",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The ios-authproxy implementation in Cisco IOS before 15.1(1)SY3 allows remote attackers to cause a denial of service (webauth and HTTP service outage) via vectors that trigger incorrectly terminated HTTP sessions, aka Bug ID CSCtz99447."
    },
    {
      "lang": "es",
      "value": "La implementación ios-authproxy en Cisco IOS anterior a 15.1(1)SY3 permite a atacantes remotos causar una denegación de servicio (interrupción de WebAuth y servicio HTTP) a través de vectores que provocan sesiones HTTP terminadas incorrectamente, también conocido como Bug ID CSCtz99447."
    }
  ],
  "lastModified": "2026-06-16T23:45:31.713",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6A9ED0E7-8A20-466D-BAD4-E7C3484F06A2",
              "versionEndIncluding": "15.1\\(1\\)sy2"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:15.1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EB41294E-F3DF-4F1E-A4C8-E90B21A88836"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:15.1\\(1\\)sy:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5AD483E0-66F9-4DD1-85FA-C125C9617E10"
            },
            {
              "criteria": "cpe:2.3:o:cisco:ios:15.1\\(1\\)sy1:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "35C1075B-11F3-453C-957D-834C5D6D8CB1"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@cisco.com"
}