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High WID-SEC-2024-2056 9 CVEs

FreeBSD Project FreeBSD OS: Mehrere Schwachstellen ermöglichen Privilegieneskalation und Codeausführung

Published Sep 4, 2024 · Updated Dec 4, 2024 · Revision 6 · de-DE

Summary

Ein Angreifer kann mehrere Schwachstellen in FreeBSD Project FreeBSD OS ausnutzen, um seine Privilegien zu erhöhen und beliebigen Code auszuführen.

Product

FreeBSD ist ein Open Source Betriebssystem aus der BSD Familie und gehört damit zu den Unix Derivaten.

Vulnerabilities 9

  • Critical 9.8

    umtx Kernel panic or Use-After-Free

    Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of UMTX_OP_SHM can lead to decreasing the reference count of the object representing the mapping too many times, causing it to be freed too early. A mali…

  • Critical 9.8

    Multiple issues in ctl(4) CAM Target Layer

    The function ctl_write_buffer incorrectly set a flag which resulted in a kernel Use-After-Free when a command finished processing. Malicious software running in a guest VM that exposes virtio_scsi can exploit the vulnerabilities to achieve code execution on t…

  • Critical 9.3

    Multiple issues in ctl(4) CAM Target Layer

    The ctl_write_buffer and ctl_read_buffer functions allocated memory to be returned to userspace, without initializing it. Malicious software running in a guest VM that exposes virtio_scsi can exploit the vulnerabilities to achieve code execution on the host i…

  • Critical 9.1

    Multiple vulnerabilities in libnv

    A malicious value of size in a structure of packed libnv can cause an integer overflow, leading to the allocation of a smaller buffer than required for the parsed data.

  • High 8.4

    bhyve(8) privileged guest escape via TPM device passthrough

    Malicious software running in a guest VM can exploit the buffer overflow to achieve code execution on the host in the bhyve userspace process, which typically runs as root. Note that bhyve runs in a Capsicum sandbox, so malicious code is constrained by the ca…

  • High 8.4

    Multiple issues in ctl(4) CAM Target Layer

    The ctl_report_supported_opcodes function did not sufficiently validate a field provided by userspace, allowing an arbitrary write to a limited amount of kernel help memory. Malicious software running in a guest VM that exposes virtio_scsi can exploit the vul…

  • High 8.4

    Multiple issues in ctl(4) CAM Target Layer

    The ctl_request_sense function could expose up to three bytes of the kernel heap to userspace. Malicious software running in a guest VM that exposes virtio_scsi can exploit the vulnerabilities to achieve code execution on the host in the bhyve userspace proce…

  • High 8.4

    Multiple vulnerabilities in libnv

    A missing null-termination character in the last element of an nvlist array string can lead to writing outside the allocated buffer.

  • High 8.2

    bhyve(8) privileged guest escape via USB controller

    An insufficient boundary validation in the USB code could lead to an out-of-bounds write on the heap, with data controlled by the caller. A malicious, privileged software running in a guest VM can exploit the vulnerability to achieve code execution on the hos…

Revision history

  1. #6

    Neue Updates von Dell aufgenommen

  2. #5

    Neue Updates von NetApp aufgenommen

  3. #4

    Neue Updates von NetApp aufgenommen

  4. #3

    Neue Updates von FreeBSD aufgenommen

  5. #2

    Neue Updates von NetApp aufgenommen

  6. #1

    Initiale Fassung

References