FKIE_CVE-2021-3696

Vulnerability from fkie_nvd - Published: 2022-07-06 16:15 - Updated: 2024-11-21 06:22
Severity ?
4.5 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Summary
A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader. This may lead to data corruption in the heap space. Confidentiality, Integrity and Availablity impact may be considered Low as it's very complex to an attacker control the encoding and positioning of corrupted Huffman entries to achieve results such as arbitrary code execution and/or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1991686Issue Tracking, Third Party Advisory
secalert@redhat.comhttps://security.gentoo.org/glsa/202209-12Third Party Advisory
secalert@redhat.comhttps://security.netapp.com/advisory/ntap-20220930-0001/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1991686Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202209-12Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20220930-0001/Third Party Advisory
Impacted products
Vendor Product Version
gnu grub2 *
redhat developer_tools 1.0
redhat openshift 3.0
redhat enterprise_linux 8.0
redhat enterprise_linux 8.1
redhat enterprise_linux 8.4
redhat enterprise_linux 9.0
redhat enterprise_linux_eus 8.2
redhat enterprise_linux_eus 8.4
redhat enterprise_linux_eus 8.6
redhat enterprise_linux_eus 9.0
redhat enterprise_linux_for_power_little_endian 8.0
redhat enterprise_linux_for_power_little_endian 9.0
redhat enterprise_linux_for_power_little_endian_eus 8.2
redhat enterprise_linux_for_power_little_endian_eus 8.4
redhat enterprise_linux_for_power_little_endian_eus 8.6
redhat enterprise_linux_for_power_little_endian_eus 9.0
redhat enterprise_linux_server_aus 8.2
redhat enterprise_linux_server_aus 8.4
redhat enterprise_linux_server_aus 8.6
redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions 8.1
redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions 8.2
redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions 8.4
redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions 8.6
redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions 9.0
redhat enterprise_linux_server_tus 8.2
redhat enterprise_linux_server_tus 8.4
redhat enterprise_linux_server_tus 8.6
redhat openshift_container_platform 4.6
redhat openshift_container_platform 4.9
redhat openshift_container_platform 4.10
redhat enterprise_linux 8.0
redhat codeready_linux_builder -
redhat enterprise_linux 8.0
redhat enterprise_linux 9.0
redhat enterprise_linux_eus 8.2
redhat enterprise_linux_eus 8.4
redhat enterprise_linux_eus 8.6
redhat enterprise_linux_eus 9.0
netapp ontap_select_deploy_administration_utility -
To clipboard 

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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A heap out-of-bounds write may heppen during the handling of Huffman tables in the PNG reader. This may lead to data corruption in the heap space. Confidentiality, Integrity and Availablity impact may be considered Low as it\u0027s very complex to an attacker control the encoding and positioning of corrupted Huffman entries to achieve results such as arbitrary code execution and/or secure boot circumvention. This flaw affects grub2 versions prior grub-2.12."
    },
    {
      "lang": "es",
      "value": "Puede producirse una escritura fuera de l\u00edmites de la pila durante el manejo de las tablas Huffman en el lector PNG. Esto puede conllevar a una corrupci\u00f3n de datos en el espacio de la pila. El impacto en la confidencialidad, integridad y disponibilidad puede considerarse bajo ya que es muy complejo que un atacante controle la codificaci\u00f3n y el posicionamiento de las entradas Huffman corruptas para conseguir resultados como la ejecuci\u00f3n de c\u00f3digo arbitrario y/o la omisi\u00f3n del arranque seguro. Este fallo afecta a grub2 versiones anteriores a grub-2.12"
    }
  ],
  "id": "CVE-2021-3696",
  "lastModified": "2024-11-21T06:22:10.657",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 6.9,
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          "integrityImpact": "COMPLETE",
          "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
          "version": "2.0"
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        "exploitabilityScore": 3.4,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
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        "source": "nvd@nist.gov",
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        "userInteractionRequired": false
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    "cvssMetricV31": [
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          "attackVector": "LOCAL",
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          "baseScore": 4.5,
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          "confidentialityImpact": "LOW",
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  "published": "2022-07-06T16:15:08.270",
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  "vulnStatus": "Modified",
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  • 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.
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