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    8 vulnerabilities found for GNU GRUB by GNU Project

    CVE-2022-28736 (GCVE-0-2022-28736)

    Vulnerability from nvd – Published: 2023-07-20 00:23 – Updated: 2025-02-13 16:32
    VLAI
    Title
    There's a use-after-free vulnerability in grub_cmd_chainloader() function
    Summary
    There's a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn't support multiboot and do not have direct support from GRUB2. When executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the GRUB2's memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved.
    Severity
    6.4 (Medium)
    CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    Assigner
    References
    Impacted products
    Vendor Product Version
    GNU Project GNU GRUB Affected: 0 , < 2.06-3 (semver)
    		Create a notification for this product.
    Date Public
    2022-06-13 00:00
    Credits
    Chris Coulson
    Show details on NVD website
    To clipboard 

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    CVE-2022-28735 (GCVE-0-2022-28735)

    Vulnerability from nvd – Published: 2023-07-20 00:22 – Updated: 2025-02-13 16:32
    VLAI
    Summary
    The GRUB2's shim_lock verifier allows non-kernel files to be loaded on shim-powered secure boot systems. Allowing such files to be loaded may lead to unverified code and modules to be loaded in GRUB2 breaking the secure boot trust-chain.
    Severity
    6.7 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    Assigner
    References
    Impacted products
    Vendor Product Version
    GNU Project GNU GRUB Affected: 0 , < 2.06-3 (semver)
    		Create a notification for this product.
    Date Public
    2022-06-13 00:00
    Credits
    Julian Andres Klode
    Show details on NVD website
    To clipboard 

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    CVE-2022-28734 (GCVE-0-2022-28734)

    Vulnerability from nvd – Published: 2023-07-20 00:22 – Updated: 2025-02-13 16:32
    VLAI
    Title
    Out-of-bounds write when handling split HTTP headers
    Summary
    Out-of-bounds write when handling split HTTP headers; When handling split HTTP headers, GRUB2 HTTP code accidentally moves its internal data buffer point by one position. This can lead to a out-of-bound write further when parsing the HTTP request, writing a NULL byte past the buffer. It's conceivable that an attacker controlled set of packets can lead to corruption of the GRUB2's internal memory metadata.
    Severity
    8.1 (High)
    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    Assigner
    References
    Impacted products
    Vendor Product Version
    GNU Project GNU GRUB Affected: 0 , < 2.06-3 (semver)
    		Create a notification for this product.
    Date Public
    2022-06-13 00:00
    Credits
    Daniel Axtens
    Show details on NVD website
    To clipboard 

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    CVE-2022-28733 (GCVE-0-2022-28733)

    Vulnerability from nvd – Published: 2023-07-20 00:20 – Updated: 2025-02-13 16:32
    VLAI
    Title
    Integer underflow in grub_net_recv_ip4_packets
    Summary
    Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm->total_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer.
    Severity
    8.1 (High)
    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    GNU Project GNU GRUB Affected: 0 , < 2.06-3 (semver)
    		Create a notification for this product.
    Date Public
    2022-06-13 00:00
    Credits
    Daniel Axtens
    Show details on NVD website
    To clipboard 

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    CVE-2022-28736 (GCVE-0-2022-28736)

    Vulnerability from cvelistv5 – Published: 2023-07-20 00:23 – Updated: 2025-02-13 16:32
    VLAI
    Title
    There's a use-after-free vulnerability in grub_cmd_chainloader() function
    Summary
    There's a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn't support multiboot and do not have direct support from GRUB2. When executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the GRUB2's memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved.
    Severity
    6.4 (Medium)
    CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    Assigner
    References
    Impacted products
    Vendor Product Version
    GNU Project GNU GRUB Affected: 0 , < 2.06-3 (semver)
    		Create a notification for this product.
    Date Public
    2022-06-13 00:00
    Credits
    Chris Coulson
    Show details on NVD website
    To clipboard 

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    CVE-2022-28735 (GCVE-0-2022-28735)

    Vulnerability from cvelistv5 – Published: 2023-07-20 00:22 – Updated: 2025-02-13 16:32
    VLAI
    Summary
    The GRUB2's shim_lock verifier allows non-kernel files to be loaded on shim-powered secure boot systems. Allowing such files to be loaded may lead to unverified code and modules to be loaded in GRUB2 breaking the secure boot trust-chain.
    Severity
    6.7 (Medium)
    CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    Assigner
    References
    Impacted products
    Vendor Product Version
    GNU Project GNU GRUB Affected: 0 , < 2.06-3 (semver)
    		Create a notification for this product.
    Date Public
    2022-06-13 00:00
    Credits
    Julian Andres Klode
    Show details on NVD website
    To clipboard 

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    CVE-2022-28734 (GCVE-0-2022-28734)

    Vulnerability from cvelistv5 – Published: 2023-07-20 00:22 – Updated: 2025-02-13 16:32
    VLAI
    Title
    Out-of-bounds write when handling split HTTP headers
    Summary
    Out-of-bounds write when handling split HTTP headers; When handling split HTTP headers, GRUB2 HTTP code accidentally moves its internal data buffer point by one position. This can lead to a out-of-bound write further when parsing the HTTP request, writing a NULL byte past the buffer. It's conceivable that an attacker controlled set of packets can lead to corruption of the GRUB2's internal memory metadata.
    Severity
    8.1 (High)
    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    Assigner
    References
    Impacted products
    Vendor Product Version
    GNU Project GNU GRUB Affected: 0 , < 2.06-3 (semver)
    		Create a notification for this product.
    Date Public
    2022-06-13 00:00
    Credits
    Daniel Axtens
    Show details on NVD website
    To clipboard 

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    CVE-2022-28733 (GCVE-0-2022-28733)

    Vulnerability from cvelistv5 – Published: 2023-07-20 00:20 – Updated: 2025-02-13 16:32
    VLAI
    Title
    Integer underflow in grub_net_recv_ip4_packets
    Summary
    Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm->total_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer.
    Severity
    8.1 (High)
    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    GNU Project GNU GRUB Affected: 0 , < 2.06-3 (semver)
    		Create a notification for this product.
    Date Public
    2022-06-13 00:00
    Credits
    Daniel Axtens
    Show details on NVD website
    To clipboard 

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