fkie_cve-2023-40547
Vulnerability from fkie_nvd
Published
2024-01-25 16:15
Modified
2024-11-21 08:19
Severity ?
8.3 (High) - CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
8.3 (High) - CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Summary
A remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This flaw allows an attacker to craft a specific malicious HTTP request, leading to a completely controlled out-of-bounds write primitive and complete system compromise. This flaw is only exploitable during the early boot phase, an attacker needs to perform a Man-in-the-Middle or compromise the boot server to be able to exploit this vulnerability successfully.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:1834
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:1835
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:1873
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:1876
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:1883
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:1902
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:1903
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:1959
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2024:2086
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2023-40547Vendor Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2234589Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2024/01/26/1
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:1834
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:1835
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:1873
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:1876
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:1883
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:1902
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:1903
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:1959
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2024:2086
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/security/cve/CVE-2023-40547Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=2234589Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/05/msg00009.html
Impacted products
Vendor Product Version
redhat shim *
redhat enterprise_linux 7.0
redhat enterprise_linux 8.0
redhat enterprise_linux 9.0


To clipboard 

{
   configurations: [
      {
         nodes: [
            {
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                     versionEndExcluding: "15.8",
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                     vulnerable: true,
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   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "A remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This flaw allows an attacker to craft a specific malicious HTTP request, leading to a completely controlled out-of-bounds write primitive and complete system compromise. This flaw is only exploitable during the early boot phase, an attacker needs to perform a Man-in-the-Middle or compromise the boot server to be able to exploit this vulnerability successfully.",
      },
      {
         lang: "es",
         value: "Se encontró una vulnerabilidad de ejecución remota de código en Shim. El soporte de arranque Shim confía en los valores controlados por el atacante al analizar una respuesta HTTP. Este fallo permite a un atacante manipular una solicitud HTTP maliciosa específica, lo que lleva a una escritura fuera de los límites completamente controlada primitiva y a un compromiso completo del sistema.",
      },
   ],
   id: "CVE-2023-40547",
   lastModified: "2024-11-21T08:19:41.650",
   metrics: {
      cvssMetricV31: [
         {
            cvssData: {
               attackComplexity: "HIGH",
               attackVector: "ADJACENT_NETWORK",
               availabilityImpact: "HIGH",
               baseScore: 8.3,
               baseSeverity: "HIGH",
               confidentialityImpact: "HIGH",
               integrityImpact: "HIGH",
               privilegesRequired: "NONE",
               scope: "CHANGED",
               userInteraction: "NONE",
               vectorString: "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
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               privilegesRequired: "NONE",
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            source: "nvd@nist.gov",
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   published: "2024-01-25T16:15:07.717",
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   sourceIdentifier: "secalert@redhat.com",
   vulnStatus: "Modified",
   weaknesses: [
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}


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