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    CVE-2018-3968

    An exploitable vulnerability exists in the verified boot protection of the Das U-Boot from version 2013.07-rc1 to 2014.07-rc2. The affected versions lack proper FIT signature enforcement, which allows an attacker to bypass U-Boot's verified boot and execute an unsigned kernel, embedded in a legacy image format. To trigger this vulnerability, a local attacker needs to be able to supply the image to boot.

    Published:Mar 21, 2019
    Last Modified:Nov 21, 2024
    EPS:Mar 21, 2019
    EPSS Score:0.00029
    CVSS Score:7

    Affected Products

    Vendor
    Denx
    Product
    U-boot

    Exploits

    https://talosintelligence.com/vulnerability_reports/TALOS-2018-0633https://talosintelligence.com/vulnerability_reports/TALOS-2018-0633

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-463 Padding Oracle Crypto Attack
    CAPEC-475 Signature Spoofing by Improper Validation

    Related CVEs

    CVE-2025-70293 (CVSS 9.8) — An issue was discovered in Denx U-Boot before 2026.04. An integer overflow vulnerability exists in function ex…
    CVE-2026-29009 (CVSS 8.8) — U-Boot before 2026.07-rc2 contains a buffer overflow vulnerability in nfs_readlink_reply() (net/nfs-common.c) …
    CVE-2026-29008 (CVSS 8.7) — U-Boot through 2026.04-rc3 contains an integer underflow vulnerability in the tcp_rx_state_machine() function …
    CVE-2026-29007 (CVSS 6.9) — U-Boot through 2026.04-rc3 contains an out-of-bounds read vulnerability in tcp_rx_state_machine() (net/tcp.c) …
    CVE-2026-46728 (CVSS 8.2) — Das U-Boot before 2026.04 allows FIT (Flat Image Tree) signature verification bypass because hashed-nodes is o…
    CVE-2026-33243 (CVSS 8.2) — barebox is a bootloader. In barebox from version 2016.03.0 to before version 2026.03.1 (and the corresponding …
    CVE-2025-24857 (CVSS 7.6) — Improper access control for volatile memory containing boot code in Universal Boot Loader (U-Boot) before 2017…
    CVE-2025-45512 (CVSS 6.5) — A lack of signature verification in the bootloader of DENX Software Engineering Das U-Boot (U-Boot) v1.1.3 all…
    CVE-2024-57255 (CVSS 7.1) — An integer overflow in sqfs_resolve_symlink in Das U-Boot before 2025.01-rc1 occurs via a crafted squashfs fil…
    CVE-2024-57259 (CVSS 7.1) — sqfs_search_dir in Das U-Boot before 2025.01-rc1 exhibits an off-by-one error and resultant heap memory corrup…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High