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    2 vulnerabilities found for efibootguard by siemens

    CVE-2023-39950 (GCVE-0-2023-39950)

    Vulnerability from nvd – Published: 2023-08-14 20:17 – Updated: 2024-10-01 18:24
    VLAI
    Title
    Insufficient input validation in efibootguard
    Summary
    efibootguard is a simple UEFI boot loader with support for safely switching between current and updated partition sets. Insufficient or missing validation and sanitization of input from untrustworthy bootloader environment files can cause crashes and probably also code injections into `bg_setenv`) or programs using `libebgenv`. This is triggered when the affected components try to modify a manipulated environment, in particular its user variables. Furthermore, `bg_printenv` may crash over invalid read accesses or report invalid results. Not affected by this issue is EFI Boot Guard's bootloader EFI binary. EFI Boot Guard release v0.15 contains required patches to sanitize and validate the bootloader environment prior to processing it in userspace. Its library and tools should be updated, so should programs statically linked against it. An update of the bootloader EFI executable is not required. The only way to prevent the issue with an unpatched EFI Boot Guard version is to avoid accesses to user variables, specifically modifications to them.
    Severity
    6.1 (Medium)
    CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:L
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2024-10-01 18:23 UTC
    CWE
    • CWE-20 - Improper Input Validation
    Assigner
    References
    Impacted products
    Vendor Product Version
    siemens efibootguard Affected: < 0.15
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2023-39950 (GCVE-0-2023-39950)

    Vulnerability from cvelistv5 – Published: 2023-08-14 20:17 – Updated: 2024-10-01 18:24
    VLAI
    Title
    Insufficient input validation in efibootguard
    Summary
    efibootguard is a simple UEFI boot loader with support for safely switching between current and updated partition sets. Insufficient or missing validation and sanitization of input from untrustworthy bootloader environment files can cause crashes and probably also code injections into `bg_setenv`) or programs using `libebgenv`. This is triggered when the affected components try to modify a manipulated environment, in particular its user variables. Furthermore, `bg_printenv` may crash over invalid read accesses or report invalid results. Not affected by this issue is EFI Boot Guard's bootloader EFI binary. EFI Boot Guard release v0.15 contains required patches to sanitize and validate the bootloader environment prior to processing it in userspace. Its library and tools should be updated, so should programs statically linked against it. An update of the bootloader EFI executable is not required. The only way to prevent the issue with an unpatched EFI Boot Guard version is to avoid accesses to user variables, specifically modifications to them.
    Severity
    6.1 (Medium)
    CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:L
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2024-10-01 18:23 UTC
    CWE
    • CWE-20 - Improper Input Validation
    Assigner
    References
    Impacted products
    Vendor Product Version
    siemens efibootguard Affected: < 0.15
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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