fkie_cve-2019-3842
Vulnerability from fkie_nvd
Published
2019-04-09 21:29
Modified
2024-11-21 04:42
Severity ?
7.0 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In systemd before v242-rc4, it was discovered that pam_systemd does not properly sanitize the environment before using the XDG_SEAT variable. It is possible for an attacker, in some particular configurations, to set a XDG_SEAT environment variable which allows for commands to be checked against polkit policies using the "allow_active" element rather than "allow_any".
References
secalert@redhat.comhttp://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.htmlThird Party Advisory
secalert@redhat.comhttp://packetstormsecurity.com/files/152610/systemd-Seat-Verification-Active-Session-Spoofing.htmlExploit, Third Party Advisory, VDB Entry
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3842Issue Tracking, Third Party Advisory
secalert@redhat.comhttps://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
secalert@redhat.comhttps://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
secalert@redhat.comhttps://lists.debian.org/debian-lts-announce/2019/04/msg00022.htmlThird Party Advisory
secalert@redhat.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STR36RJE4ZZIORMDXRERVBHMPRNRTHAC/
secalert@redhat.comhttps://www.exploit-db.com/exploits/46743/Exploit, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00062.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://packetstormsecurity.com/files/152610/systemd-Seat-Verification-Active-Session-Spoofing.htmlExploit, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3842Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2019/04/msg00022.htmlThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/STR36RJE4ZZIORMDXRERVBHMPRNRTHAC/
af854a3a-2127-422b-91ae-364da2661108https://www.exploit-db.com/exploits/46743/Exploit, Third Party Advisory, VDB Entry
Impacted products
Vendor Product Version
systemd_project systemd *
systemd_project systemd 242
systemd_project systemd 242
systemd_project systemd 242
redhat enterprise_linux 7.0
fedoraproject fedora 30
debian debian_linux 8.0


To clipboard 

{
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              "versionEndIncluding": "241",
              "vulnerable": true
            },
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              "matchCriteriaId": "3E2ACFB1-6787-47D0-B7F3-CF4F129732A2",
              "vulnerable": true
            },
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In systemd before v242-rc4, it was discovered that pam_systemd does not properly sanitize the environment before using the XDG_SEAT variable. It is possible for an attacker, in some particular configurations, to set a XDG_SEAT environment variable which allows for commands to be checked against polkit policies using the \"allow_active\" element rather than \"allow_any\"."
    },
    {
      "lang": "es",
      "value": "En systemd anterior de la versi\u00f3n v242-rc4, fue encontrado que pam_systemd no sanea apropiadamente el entorno anterior usando la variable XDG_SEAT. Es posible que un atacante, en ciertas configuraciones particulares, establezca una variable de entorno XDG_SEAT que permita comprobar los comandos contra las pol\u00edticas polkit utilizando el elemento \"allow_active\" en lugar de \"allow_any\"."
    }
  ],
  "id": "CVE-2019-3842",
  "lastModified": "2024-11-21T04:42:40.903",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 4.4,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
          "version": "2.0"
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        "exploitabilityScore": 3.4,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
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          "version": "3.0"
        },
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        "impactScore": 5.9,
        "source": "nvd@nist.gov",
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  },
  "published": "2019-04-09T21:29:03.443",
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}


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