2023-09-15 22:00:28 +00:00

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{
"id": "CVE-2023-41325",
"sourceIdentifier": "security-advisories@github.com",
"published": "2023-09-15T20:15:10.800",
"lastModified": "2023-09-15T20:15:10.800",
"vulnStatus": "Received",
"descriptions": [
{
"lang": "en",
"value": "OP-TEE is a Trusted Execution Environment (TEE) designed as companion to a non-secure Linux kernel running on Arm; Cortex-A cores using the TrustZone technology. Starting in version 3.20 and prior to version 3.22, `shdr_verify_signature` can make a double free. `shdr_verify_signature` used to verify a TA binary before it is loaded. To verify a signature of it, allocate a memory for RSA key. RSA key allocate function (`sw_crypto_acipher_alloc_rsa_public_key`) will try to allocate a memory (which is optee\u2019s heap memory). RSA key is consist of exponent and modulus (represent as variable `e`, `n`) and it allocation is not atomic way, so it may succeed in `e` but fail in `n`. In this case sw_crypto_acipher_alloc_rsa_public_key` will free on `e` and return as it is failed but variable \u2018e\u2019 is remained as already freed memory address . `shdr_verify_signature` will free again that memory (which is `e`) even it is freed when it failed allocate RSA key. A patch is available in version 3.22. No known workarounds are available."
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "security-advisories@github.com",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N",
"attackVector": "LOCAL",
"attackComplexity": "LOW",
"privilegesRequired": "HIGH",
"userInteraction": "REQUIRED",
"scope": "CHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "NONE",
"baseScore": 7.4,
"baseSeverity": "HIGH"
},
"exploitabilityScore": 1.1,
"impactScore": 5.8
}
]
},
"weaknesses": [
{
"source": "security-advisories@github.com",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-415"
}
]
}
],
"references": [
{
"url": "https://github.com/OP-TEE/optee_os/commit/e2ec831cb07ed0099535c7c140cb6338aa62816a",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/OP-TEE/optee_os/security/advisories/GHSA-jrw7-63cq-7vhm",
"source": "security-advisories@github.com"
}
]
}