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Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-wc42-fcjp-v8vq.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...

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Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-wc42-fcjp-v8vq.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...

CVE-2023-43636

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...

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...

CVE-2023-43630

PCR14 is not in the list of PCRs that seal/unseal the “vault” key, but due to the change that was implemented in commit “7638364bc0acf8b5c481b5ce5fea11ad44ad7fd4”, fixing this issue alone would not solve the problem of the config partition not being measured correctly. Also, the “vault” key is...

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

PCR14 is not in the list of PCRs that seal/unseal the “vault” key, but due to the change that was implemented in commit “7638364bc0acf8b5c481b5ce5fea11ad44ad7fd4”, fixing this issue alone would not solve the problem of the config partition not being measured correctly. Also, the “vault” key is...

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...

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...

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...

CVE-2023-43636

Summary: CVE-2023-43636 concerns EVE OS measured boot not validating the entire root filesystem (rootfs). The PCR-based attestation covers BIOS/GRUB/kernel cmdline/initrd but not the complete rootfs, allowing an attacker to alter the squashfs root image and gain control without triggering attesta...

CVE-2023-43630 Config Partition Not Measured From 2 Fronts

PCR14 is not in the list of PCRs that seal/unseal the “vault” key, but due to the change that was implemented in commit “7638364bc0acf8b5c481b5ce5fea11ad44ad7fd4”, fixing this issue alone would not solve the problem of the config partition not being measured correctly. Also, the “vault” key is...

CVE-2023-43630

CVE-2023-43630 documents a TPM/Measured Boot issue in the EVE project (lf-edge/eve) where PCR14 is not in the sealing/unsealing list for the vault key, and the vault key is sealed with SHA1 PCRs instead of SHA256. A code change (commit 7638364bc0acf8b5c481b5ce5fea11ad44ad7fd4) meant that PCR14 up...

CVE-2023-43630 Config Partition Not Measured From 2 Fronts

PCR14 is not in the list of PCRs that seal/unseal the “vault” key, but due to the change that was implemented in commit “7638364bc0acf8b5c481b5ce5fea11ad44ad7fd4”, fixing this issue alone would not solve the problem of the config partition not being measured correctly. Also, the “vault” key is...

CVE-2023-43630 Config Partition Not Measured From 2 Fronts

PCR14 is not in the list of PCRs that seal/unseal the “vault” key, but due to the change that was implemented in commit “7638364bc0acf8b5c481b5ce5fea11ad44ad7fd4”, fixing this issue alone would not solve the problem of the config partition not being measured correctly. Also, the “vault” key is...