Design/Logic Flaw

When sealing/unsealing the “vault” key, a list of PCRs is used, which defines which PCRs are used. In a previous project, CYMOTIVE found that the configuration is not protected by the secure boot, and in response Zededa implemented measurements on the config partition that was mapped to PCR 13. I...

CVE-2023-43637 Vault Key Partially Predetermined

Due to the implementation of "deriveVaultKey", prior to version 7.10, the generated vault key would always have the last 16 bytes predetermined to be "arfoobarfoobarfo". This issue happens because "deriveVaultKey" calls "retrieveCloudKey" which will always return "foobarfoobarfoobarfoobarfoobarfo...

CVE-2023-43634

CVE-2023-43634 relates to the EVE project: the config partition is measured for TPM PCRs used to seal/unseal the vault key. A change moved the config partition measurement from PCR 13 to PCR 14, but PCR 14 was not added to the sealing/unsealing list, making PCR 14’s measurement effectively redund...

EVE OS Trust Management Issue Vulnerability

EVE OS is a general-purpose, open Linux-based operating system for distributed edge computing open-sourced by IF Edge. A security vulnerability exists in EVE OS versions prior to 7.10, which stems from deriveVaultKey predetermining the last 16 bytes of a vault key as arfoobarfoobarfo, resulting i...

PT-2023-28893

Name of the Vulnerable Software and Affected Versions SoftwareX versions prior to 7.10 Description The issue arises from the implementation of deriveVaultKey, which generates a vault key with the last 16 bytes predetermined to be "arfoobarfoobarfo". This occurs because deriveVaultKey calls...

Inside the vault: how financial institutions protect their cloud environments

As part of our monthly CISO webinar series, Wiz’s VP of Product Strategy, Raaz Herzberg, spoke with three security experts to learn how each of them prioritize cloud security, and how they extend the reach of good security practices across their organizations...

GHSA-5JVG-8J6F-VPMC Duplicate Advisory: EVE Doesn't Measure Config Partition From 2 Fronts

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-phcg-h58r-gmcq. This link is maintained to preserve external references. Original Description PCR14 is not in the list of PCRs that seal/unseal the “vault” key, but due to the change that was implemented in comm...

Duplicate Advisory: EVE Doesn't Measure Config Partition From 2 Fronts

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-phcg-h58r-gmcq. This link is maintained to preserve external references. Original Description PCR14 is not in the list of PCRs that seal/unseal the “vault” key, but due to the change that was implemented in comm...

GHSA-X9MP-JM4H-JJF8 Duplicate Advisory: EVE Doesn't Protect Rootfs

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-wc42-fcjp-v8vq. This link is maintained to preserve external references. Original Description In EVE OS, the “measured boot” mechanism prevents a compromised device from accessing the encrypted data located in t...

GHSA-H929-FVVP-882C Duplicate Advisory: EVE Seals Vault Key With SHA1 PCRs

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-wc42-fcjp-v8vq. This link is maintained to preserve external references. Original Description Vault Key Sealed With SHA1 PCRs The measured boot solution implemented in EVE OS leans on a PCR locking mechanism...

Duplicate Advisory: EVE Seals Vault Key With SHA1 PCRs

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-wc42-fcjp-v8vq. This link is maintained to preserve external references. Original Description Vault Key Sealed With SHA1 PCRs The measured boot solution implemented in EVE OS leans on a PCR locking mechanism...

Duplicate Advisory: EVE Doesn't Protect Rootfs

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-wc42-fcjp-v8vq. This link is maintained to preserve external references. Original Description In EVE OS, the “measured boot” mechanism prevents a compromised device from accessing the encrypted data located in t...

CVE-2023-43635

Vault Key Sealed With SHA1 PCRs The measured boot solution implemented in EVE OS leans on a PCR locking mechanism. Different parts of the system update different PCR values in the TPM, resulting in a unique value for each PCR entry. These PCRs are then used in order to seal/unseal a key from the...

Design/Logic Flaw

In EVE OS, the “measured boot” mechanism prevents a compromised device from accessing the encrypted data located in the vault. As per the “measured boot” design, the PCR values calculated at different stages of the boot process will change if any of their respective parts are changed. This...

Design/Logic Flaw

Vault Key Sealed With SHA1 PCRs The measured boot solution implemented in EVE OS leans on a PCR locking mechanism. Different parts of the system update different PCR values in the TPM, resulting in a unique value for each PCR entry. These PCRs are then used in order to seal/unseal a key from the...

CVE-2023-43635

Summary of CVE-2023-43635 / GHSA-4JVR-VJ2C-8Q37 : In EVE-OS measured boot, the vault key is sealed using SHA1 PCRs instead of SHA256 PCRs. The TPM PCRs that are used to seal/unseal the key for encrypting the vault directory may be SHA1-enabled while SHA256 PCRs are not consistently used, enabling...

CVE-2023-43635 Vault Key Sealed With SHA1 PCRs

Vault Key Sealed With SHA1 PCRs The measured boot solution implemented in EVE OS leans on a PCR locking mechanism. Different parts of the system update different PCR values in the TPM, resulting in a unique value for each PCR entry. These PCRs are then used in order to seal/unseal a key from the...

CVE-2023-43635 Vault Key Sealed With SHA1 PCRs

Vault Key Sealed With SHA1 PCRs The measured boot solution implemented in EVE OS leans on a PCR locking mechanism. Different parts of the system update different PCR values in the TPM, resulting in a unique value for each PCR entry. These PCRs are then used in order to seal/unseal a key from the...

CVE-2023-43635 Vault Key Sealed With SHA1 PCRs

Vault Key Sealed With SHA1 PCRs The measured boot solution implemented in EVE OS leans on a PCR locking mechanism. Different parts of the system update different PCR values in the TPM, resulting in a unique value for each PCR entry. These PCRs are then used in order to seal/unseal a key from the...

CVE-2023-43636 Rootfs Not Protected

In EVE OS, the “measured boot” mechanism prevents a compromised device from accessing the encrypted data located in the vault. As per the “measured boot” design, the PCR values calculated at different stages of the boot process will change if any of their respective parts are changed. This...