FKIE_CVE-2023-49100

Vulnerability from fkie_nvd - Published: 2024-02-21 16:15 - Updated: 2026-06-17 06:35
Severity
4.4 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Summary
Trusted Firmware-A (TF-A) before 2.10 has a potential read out-of-bounds in the SDEI service. The input parameter passed in register x1 is not validated well enough in the function sdei_interrupt_bind. The parameter is passed to a call to plat_ic_get_interrupt_type. It can be any arbitrary value passing checks in the function plat_ic_is_sgi. A compromised Normal World (Linux kernel) can enable a root-privileged attacker to issue arbitrary SMC calls. Using this primitive, he can control the content of registers x0 through x6, which are used to send parameters to TF-A. Out-of-bounds addresses can be read in the context of TF-A (EL3). Because the read value is never returned to non-secure memory or in registers, no leak is possible. An attacker can still crash TF-A, however.
References
cve@mitre.orghttps://github.com/ARM-software/arm-trusted-firmware/blob/a05414bedc9b1cc35cf0795ce641b6b4db5bc97e/services/std_svc/sdei/sdei_main.c#L708
cve@mitre.orghttps://github.com/ARM-software/arm-trusted-firmware/blob/a05414bedc9b1cc35cf0795ce641b6b4db5bc97e/services/std_svc/sdei/sdei_main.c#L714
cve@mitre.orghttps://trustedfirmware-a.readthedocs.io/en/latest/security_advisories/security-advisory-tfv-11.html
af854a3a-2127-422b-91ae-364da2661108https://github.com/ARM-software/arm-trusted-firmware/blob/a05414bedc9b1cc35cf0795ce641b6b4db5bc97e/services/std_svc/sdei/sdei_main.c#L708
af854a3a-2127-422b-91ae-364da2661108https://github.com/ARM-software/arm-trusted-firmware/blob/a05414bedc9b1cc35cf0795ce641b6b4db5bc97e/services/std_svc/sdei/sdei_main.c#L714
af854a3a-2127-422b-91ae-364da2661108https://trustedfirmware-a.readthedocs.io/en/latest/security_advisories/security-advisory-tfv-11.html
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Trusted Firmware-A (TF-A) before 2.10 has a potential read out-of-bounds in the SDEI service. The input parameter passed in register x1 is not validated well enough in the function sdei_interrupt_bind. The parameter is passed to a call to plat_ic_get_interrupt_type. It can be any arbitrary value passing checks in the function plat_ic_is_sgi. A compromised Normal World (Linux kernel) can enable a root-privileged attacker to issue arbitrary SMC calls. Using this primitive, he can control the content of registers x0 through x6, which are used to send parameters to TF-A. Out-of-bounds addresses can be read in the context of TF-A (EL3). Because the read value is never returned to non-secure memory or in registers, no leak is possible. An attacker can still crash TF-A, however."
    },
    {
      "lang": "es",
      "value": "Trusted Firmware-A (TF-A) anterior a 2.10 tiene una posible lectura fuera de los l\u00edmites en el servicio SDEI. El par\u00e1metro de entrada pasado en el registro x1 no est\u00e1 suficientemente validado en la funci\u00f3n sdei_interrupt_bind. El par\u00e1metro se pasa a una llamada a plat_ic_get_interrupt_type. Puede ser cualquier valor arbitrario que pase las comprobaciones en la funci\u00f3n plat_ic_is_sgi. Un Normal World (kernel de Linux) comprometido puede permitir que un atacante con privilegios de root emita llamadas SMC arbitrarias. Usando esta primitiva, puede controlar el contenido de los registros x0 a x6, que se utilizan para enviar par\u00e1metros a TF-A. Las direcciones fuera de los l\u00edmites se pueden leer en el contexto de TF-A (EL3). Debido a que el valor le\u00eddo nunca se devuelve a la memoria no segura o a los registros, no es posible ninguna fuga. Sin embargo, un atacante a\u00fan puede bloquear TF-A."
    }
  ],
  "id": "CVE-2023-49100",
  "lastModified": "2026-06-17T06:35:22.037",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 4.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 0.8,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-49100",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-04T18:25:46.364050Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-02-21T16:15:49.457",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/ARM-software/arm-trusted-firmware/blob/a05414bedc9b1cc35cf0795ce641b6b4db5bc97e/services/std_svc/sdei/sdei_main.c#L708"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/ARM-software/arm-trusted-firmware/blob/a05414bedc9b1cc35cf0795ce641b6b4db5bc97e/services/std_svc/sdei/sdei_main.c#L714"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://trustedfirmware-a.readthedocs.io/en/latest/security_advisories/security-advisory-tfv-11.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://github.com/ARM-software/arm-trusted-firmware/blob/a05414bedc9b1cc35cf0795ce641b6b4db5bc97e/services/std_svc/sdei/sdei_main.c#L708"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://github.com/ARM-software/arm-trusted-firmware/blob/a05414bedc9b1cc35cf0795ce641b6b4db5bc97e/services/std_svc/sdei/sdei_main.c#L714"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://trustedfirmware-a.readthedocs.io/en/latest/security_advisories/security-advisory-tfv-11.html"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}



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