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CVE-2020-13881

Estado: ModificadaAlta (7.5)—

In support.c in pam_tacplus 1.3.8 through 1.5.1, the TACACS+ shared secret gets logged via syslog if the DEBUG loglevel and journald are used.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (4)

CWE

Referencias

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{
  "id": "CVE-2020-13881",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-06-06T19:15:09.610",
  "references": [
    {
      "url": "http://www.openwall.com/lists/oss-security/2020/06/08/1",
      "tags": [
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        "Patch",
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      "source": "cve@mitre.org"
    },
    {
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    },
    {
      "url": "https://www.arista.com/en/support/advisories-notices/security-advisories/11705-security-advisory-50",
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      "source": "cve@mitre.org"
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    {
      "url": "http://www.openwall.com/lists/oss-security/2020/06/08/1",
      "tags": [
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      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/kravietz/pam_tacplus/commit/4a9852c31c2fd0c0e72fbb689a586aabcfb11cb0",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00007.html",
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    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2021/08/msg00006.html",
      "tags": [
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        "Third Party Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://usn.ubuntu.com/4521-1/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.arista.com/en/support/advisories-notices/security-advisories/11705-security-advisory-50",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-532"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In support.c in pam_tacplus 1.3.8 through 1.5.1, the TACACS+ shared secret gets logged via syslog if the DEBUG loglevel and journald are used."
    },
    {
      "lang": "es",
      "value": "En el archivo support.c en pam_tacplus versiones 1.3.8 hasta 1.5.1, el secreto compartido TACACS+ es registrado por medio de syslog si el nivel de registro DEBUG y journald son usados"
    }
  ],
  "lastModified": "2026-06-17T02:53:49.723",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:pam_tacplus_project:pam_tacplus:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5CBB04E0-1798-4128-B107-EC27FE0CEAAB",
              "versionEndIncluding": "1.5.1",
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          ],
          "operator": "OR"
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    {
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              "criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
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              "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43"
            },
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              "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252"
            }
          ],
          "operator": "OR"
        }
      ]
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    {
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              "matchCriteriaId": "902B8056-9E37-443B-8905-8AA93E2447FB"
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    {
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              "versionEndExcluding": "2020.1.2"
            }
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  "sourceIdentifier": "cve@mitre.org"
}