FKIE_CVE-2020-5202

Vulnerability from fkie_nvd - Published: 2020-01-21 18:15 - Updated: 2024-11-21 05:33
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Summary
apt-cacher-ng through 3.3 allows local users to obtain sensitive information by hijacking the hardcoded TCP port. The /usr/lib/apt-cacher-ng/acngtool program attempts to connect to apt-cacher-ng via TCP on localhost port 3142, even if the explicit SocketPath=/var/run/apt-cacher-ng/socket command-line option is passed. The cron job /etc/cron.daily/apt-cacher-ng (which is active by default) attempts this periodically. Because 3142 is an unprivileged port, any local user can try to bind to this port and will receive requests from acngtool. There can be sensitive data in these requests, e.g., if AdminAuth is enabled in /etc/apt-cacher-ng/security.conf. This sensitive data can leak to unprivileged local users that manage to bind to this port before the apt-cacher-ng daemon can.
References
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-01/msg00057.htmlMailing List, Third Party Advisory
cve@mitre.orghttp://lists.opensuse.org/opensuse-security-announce/2020-01/msg00065.htmlMailing List, Third Party Advisory
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2020/01/20/4Exploit, Mailing List, Third Party Advisory
cve@mitre.orghttp://www.openwall.com/lists/oss-security/2020/01/20/4Exploit, Mailing List, Third Party Advisory
cve@mitre.orghttps://seclists.org/oss-sec/2020/q1/21Exploit, Mailing List, Third Party Advisory
cve@mitre.orghttps://security-tracker.debian.org/tracker/CVE-2020-5202Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00057.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00065.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2020/01/20/4Exploit, Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2020/01/20/4Exploit, Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://seclists.org/oss-sec/2020/q1/21Exploit, Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security-tracker.debian.org/tracker/CVE-2020-5202Patch, Third Party Advisory
Impacted products
Vendor Product Version
apt-cacher-ng_project apt-cacher-ng *
debian debian_linux 8.0
debian debian_linux 9.0
debian debian_linux 10.0
opensuse backports sle-15
opensuse leap 15.1
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:apt-cacher-ng_project:apt-cacher-ng:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9F58C1F6-AA0C-46EC-81CC-14F62DDD1D1F",
              "versionEndIncluding": "3.3",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:opensuse:backports:sle-15:sp1:*:*:*:*:*:*",
              "matchCriteriaId": "C84D9410-31B7-421A-AD99-8ED2E45A9BC6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "B620311B-34A3-48A6-82DF-6F078D7A4493",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "apt-cacher-ng through 3.3 allows local users to obtain sensitive information by hijacking the hardcoded TCP port. The /usr/lib/apt-cacher-ng/acngtool program attempts to connect to apt-cacher-ng via TCP on localhost port 3142, even if the explicit SocketPath=/var/run/apt-cacher-ng/socket command-line option is passed. The cron job /etc/cron.daily/apt-cacher-ng (which is active by default) attempts this periodically. Because 3142 is an unprivileged port, any local user can try to bind to this port and will receive requests from acngtool. There can be sensitive data in these requests, e.g., if AdminAuth is enabled in /etc/apt-cacher-ng/security.conf. This sensitive data can leak to unprivileged local users that manage to bind to this port before the apt-cacher-ng daemon can."
    },
    {
      "lang": "es",
      "value": "apt-cacher-ng versiones hasta 3.3, permite a usuarios locales obtener informaci\u00f3n confidencial al secuestrar el puerto TCP codificado. El programa /usr/lib/apt-cacher-ng/acngtool intenta conectarse a apt-cacher-ng por medio de TCP en el puerto localhost 3142, inclusive si es pasada la opci\u00f3n de l\u00ednea de comando explicita SocketPath=/var/run/apt-cacher-ng/socket. El trabajo cron de /etc/cron.daily/apt-cacher-ng (que est\u00e1 activo por defecto) intenta esto peri\u00f3dicamente. Como el 3142 es un puerto sin privilegios, cualquier usuario local puede intentar vincularse a este puerto y recibir\u00e1 peticiones desde acngtool. Puede haber datos confidenciales en estas peticiones, por ejemplo, si AdminAuth est\u00e1 habilitado en /etc/apt-cacher-ng/security.conf. Estos datos confidenciales pueden filtrarse a usuarios locales no privilegiados que logran unirse a este puerto antes de que el demonio apt-cacher-ng pueda hacerlo."
    }
  ],
  "id": "CVE-2020-5202",
  "lastModified": "2024-11-21T05:33:40.100",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 2.1,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2020-01-21T18:15:13.060",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00057.html"
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    {
      "source": "cve@mitre.org",
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      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00065.html"
    },
    {
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    },
    {
      "source": "cve@mitre.org",
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    },
    {
      "source": "cve@mitre.org",
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    },
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      "source": "cve@mitre.org",
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      "url": "https://security-tracker.debian.org/tracker/CVE-2020-5202"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
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      "tags": [
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      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00065.html"
    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      ],
      "url": "https://security-tracker.debian.org/tracker/CVE-2020-5202"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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