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’s 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 ‘e’ 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.
References
Link | Resource |
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https://github.com/OP-TEE/optee_os/commit/e2ec831cb07ed0099535c7c140cb6338aa62816a | Patch |
https://github.com/OP-TEE/optee_os/security/advisories/GHSA-jrw7-63cq-7vhm | Exploit Vendor Advisory |
Configurations
Configuration 1 (hide)
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History
22 Sep 2023, 19:07
Type | Values Removed | Values Added |
---|---|---|
First Time |
Linaro op-tee
Linaro |
|
CPE | cpe:2.3:o:linaro:op-tee:*:*:*:*:*:*:*:* cpe:2.3:o:linaro:op-tee:3.22.0:rc1:*:*:*:*:*:* |
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CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.7 |
References | (MISC) https://github.com/OP-TEE/optee_os/security/advisories/GHSA-jrw7-63cq-7vhm - Exploit, Vendor Advisory | |
References | (MISC) https://github.com/OP-TEE/optee_os/commit/e2ec831cb07ed0099535c7c140cb6338aa62816a - Patch |
17 Sep 2023, 12:01
Type | Values Removed | Values Added |
---|---|---|
New CVE |
Information
Published : 2023-09-15 20:15
Updated : 2024-02-28 20:33
NVD link : CVE-2023-41325
Mitre link : CVE-2023-41325
CVE.ORG link : CVE-2023-41325
JSON object : View
Products Affected
linaro
- op-tee
CWE
CWE-415
Double Free