CVE-2022-46152

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Summary

CVECVE-2022-46152
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-11-29 17:15:00 UTC
Updated2022-12-02 18:45:00 UTC
DescriptionOP-TEE Trusted OS is the secure side implementation of OP-TEE project, a Trusted Execution Environment. Versions prior to 3.19.0, contain an Improper Validation of Array Index vulnerability. The function `cleanup_shm_refs()` is called by both `entry_invoke_command()` and `entry_open_session()`. The commands `OPTEE_MSG_CMD_OPEN_SESSION` and `OPTEE_MSG_CMD_INVOKE_COMMAND` can be executed from the normal world via an OP-TEE SMC. This function is not validating the `num_params` argument, which is only limited to `OPTEE_MSG_MAX_NUM_PARAMS` (127) in the function `get_cmd_buffer()`. Therefore, an attacker in the normal world can craft an SMC call that will cause out-of-bounds reading in `cleanup_shm_refs` and potentially freeing of fake-objects in the function `mobj_put()`. A normal-world attacker with permission to execute SMC instructions may exploit this flaw. Maintainers believe this problem permits local privilege escalation from the normal world to the secure world. Version 3.19.0 contains a fix for this issue. There are no known workarounds.

Risk And Classification

Problem Types: CWE-129

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Op-tee Op-tee Os All All All All

References

ReferenceSourceLinkTags
optee_os/entry_std.c at c2d449482de098f1c894b94f338440e5a327813d · OP-TEE/optee_os · GitHub MISC github.com
core: tee_entry: fix array out of bounds check in cleanup_shm_refs() · OP-TEE/optee_os@728616b · GitHub MISC github.com
NVD - CVSS v3 Calculator MISC nvd.nist.gov
Improper Validation of Array Index in the cleanup_shm_refs function · Advisory · OP-TEE/optee_os · GitHub CONFIRM github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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