CVE-2023-3972 (GCVE-0-2023-3972)

Vulnerability from cvelistv5 – Published: 2023-11-01 15:54 – Updated: 2025-11-20 07:23
VLAI?
Summary
A vulnerability was found in insights-client. This security issue occurs because of insecure file operations or unsafe handling of temporary files and directories that lead to local privilege escalation. Before the insights-client has been registered on the system by root, an unprivileged local user or attacker could create the /var/tmp/insights-client directory (owning the directory with read, write, and execute permissions) on the system. After the insights-client is registered by root, an attacker could then control the directory content that insights are using by putting malicious scripts into it and executing arbitrary code as root (trivially bypassing SELinux protections because insights processes are allowed to disable SELinux system-wide).
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-379 - Creation of Temporary File in Directory with Insecure Permissions
Assigner
References
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 7 Unaffected: 0:3.1.9-1.el7_9 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:7::server
    cpe:/o:redhat:enterprise_linux:7::workstation
    cpe:/o:redhat:enterprise_linux:7::client
 Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:3.2.2-1.el8_8 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
 Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions Unaffected: 0:3.2.3-1.el8_1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.1::appstream
 Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support Unaffected: 0:3.2.3-1.el8_2 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.2::appstream
    cpe:/a:redhat:rhel_aus:8.2::appstream
    cpe:/a:redhat:rhel_tus:8.2::appstream
 Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.2 Telecommunications Update Service Unaffected: 0:3.2.3-1.el8_2 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.2::appstream
    cpe:/a:redhat:rhel_aus:8.2::appstream
    cpe:/a:redhat:rhel_tus:8.2::appstream
 Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions Unaffected: 0:3.2.3-1.el8_2 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.2::appstream
    cpe:/a:redhat:rhel_aus:8.2::appstream
    cpe:/a:redhat:rhel_tus:8.2::appstream
 Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:3.2.3-1.el8_4 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.4::appstream
    cpe:/a:redhat:rhel_tus:8.4::appstream
    cpe:/a:redhat:rhel_aus:8.4::appstream
 Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Telecommunications Update Service Unaffected: 0:3.2.3-1.el8_4 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.4::appstream
    cpe:/a:redhat:rhel_tus:8.4::appstream
    cpe:/a:redhat:rhel_aus:8.4::appstream
 Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions Unaffected: 0:3.2.3-1.el8_4 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.4::appstream
    cpe:/a:redhat:rhel_tus:8.4::appstream
    cpe:/a:redhat:rhel_aus:8.4::appstream
 Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Unaffected: 0:3.2.2-1.el8_6 , < * (rpm)
    cpe:/a:redhat:rhel_eus:8.6::appstream
 Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:3.2.2-1.el9_2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
 Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support Unaffected: 0:3.2.2-1.el9_0 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.0::appstream
 Create a notification for this product.
    Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
 Create a notification for this product.
Credits
This issue was discovered by Alasdair Kergon (Red Hat) and Pavel Odvody (Red Hat).
Show details on NVD website
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      "descriptions": "[{\"lang\": \"en\", \"value\": \"A vulnerability was found in insights-client. This security issue occurs because of insecure file operations or unsafe handling of temporary files and directories that lead to local privilege escalation. Before the insights-client has been registered on the system by root, an unprivileged local user or attacker could create the /var/tmp/insights-client directory (owning the directory with read, write, and execute permissions) on the system. After the insights-client is registered by root, an attacker could then control the directory content that insights are using by putting malicious scripts into it and executing arbitrary code as root (trivially bypassing SELinux protections because insights processes are allowed to disable SELinux system-wide).\"}, {\"lang\": \"es\", \"value\": \"Se encontr\\u00f3 una vulnerabilidad en insights-client. Este problema de seguridad se produce debido a operaciones de archivos inseguras o al manejo inseguro de archivos y directorios temporales que conducen a una escalada de privilegios locales. Antes de que el usuario root registre el cliente de insights en el sistema, un usuario local sin privilegios o un atacante podr\\u00eda crear el directorio /var/tmp/insights-client (que posee el directorio con permisos de lectura, escritura y ejecuci\\u00f3n) en el sistema. Despu\\u00e9s de que el cliente de Insights est\\u00e9 registrado como root, un atacante podr\\u00eda controlar el contenido del directorio que utiliza Insights colocando scripts maliciosos en \\u00e9l y ejecutando c\\u00f3digo arbitrario como root (evitando trivialmente las protecciones de SELinux porque los procesos de Insights pueden desactivar SELinux en todo el sistema).\"}]",
      "id": "CVE-2023-3972",
      "lastModified": "2024-11-21T08:18:25.853",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"secalert@redhat.com\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}]}",
      "published": "2023-11-01T16:15:08.517",
      "references": "[{\"url\": \"https://access.redhat.com/errata/RHSA-2023:6264\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6282\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6283\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6284\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6795\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6796\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6798\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6811\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://access.redhat.com/security/cve/CVE-2023-3972\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2227027\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Issue Tracking\", \"Vendor Advisory\"]}, {\"url\": \"https://github.com/RedHatInsights/insights-core/pull/3878\", \"source\": \"secalert@redhat.com\", \"tags\": [\"Patch\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6264\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6282\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6283\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6284\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6795\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6796\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6798\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6811\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://access.redhat.com/security/cve/CVE-2023-3972\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2227027\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Issue Tracking\", \"Vendor Advisory\"]}, {\"url\": \"https://github.com/RedHatInsights/insights-core/pull/3878\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Patch\"]}]",
      "sourceIdentifier": "secalert@redhat.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"secalert@redhat.com\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-379\"}]}, {\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-668\"}]}, {\"source\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-379\"}]}]"
    },
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\"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/a:redhat:rhel_eus:9.0::appstream\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 9.0 Extended Update Support\", \"versions\": [{\"status\": \"unaffected\", \"version\": \"0:3.2.2-1.el9_0\", \"lessThan\": \"*\", \"versionType\": \"rpm\"}], \"packageName\": \"insights-client\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:/o:redhat:enterprise_linux:6\"], \"vendor\": \"Red Hat\", \"product\": \"Red Hat Enterprise Linux 6\", \"packageName\": \"insights-client\", \"collectionURL\": \"https://access.redhat.com/downloads/content/package-browser/\", \"defaultStatus\": \"unknown\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2023-07-27T00:00:00+00:00\", \"value\": \"Reported to Red Hat.\"}, {\"lang\": \"en\", \"time\": \"2023-11-01T11:00:00+00:00\", \"value\": \"Made public.\"}], \"datePublic\": \"2023-11-01T11:00:00.000Z\", \"references\": [{\"url\": \"https://access.redhat.com/errata/RHSA-2023:6264\", \"name\": \"RHSA-2023:6264\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6282\", \"name\": \"RHSA-2023:6282\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6283\", \"name\": \"RHSA-2023:6283\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6284\", \"name\": \"RHSA-2023:6284\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6795\", \"name\": \"RHSA-2023:6795\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6796\", \"name\": \"RHSA-2023:6796\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6798\", \"name\": \"RHSA-2023:6798\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2023:6811\", \"name\": \"RHSA-2023:6811\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/security/cve/CVE-2023-3972\", \"tags\": [\"vdb-entry\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2227027\", \"name\": \"RHBZ#2227027\", \"tags\": [\"issue-tracking\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://github.com/RedHatInsights/insights-core/pull/3878\"}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"A vulnerability was found in insights-client. This security issue occurs because of insecure file operations or unsafe handling of temporary files and directories that lead to local privilege escalation. Before the insights-client has been registered on the system by root, an unprivileged local user or attacker could create the /var/tmp/insights-client directory (owning the directory with read, write, and execute permissions) on the system. After the insights-client is registered by root, an attacker could then control the directory content that insights are using by putting malicious scripts into it and executing arbitrary code as root (trivially bypassing SELinux protections because insights processes are allowed to disable SELinux system-wide).\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-379\", \"description\": \"Creation of Temporary File in Directory with Insecure Permissions\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2025-11-20T07:23:35.681Z\"}, \"x_redhatCweChain\": \"CWE-61-\u003eCWE-379: UNIX Symbolic Link (Symlink) Following leads to Creation of Temporary File in Directory with Insecure Permissions\"}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-3972\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-20T07:23:35.681Z\", \"dateReserved\": \"2023-07-27T12:10:37.684Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2023-11-01T15:54:52.093Z\", \"assignerShortName\": \"redhat\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Taxonomy of the tags.




Sightings

Author Source Type Date

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.



Detection rules are retrieved from Rulezet.