The remote Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-2456 advisory.

    - Fix CVE-2022-3775 [Orabug: 34871953]
    - (CVE-2023-4692)
    - grub-set-bootflag: Fix for CVE-2024-1048
    - (CVE-2024-1048)
    - Resolves: #CVE-2023-4001

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2024:3184 advisory.

    * grub2: grub2-set-bootflag can be abused by local (pseudo-)users (CVE-2024-1048)

    * grub2: Out-of-bounds write at fs/ntfs.c may lead to unsigned code execution (CVE-2023-4692)

    * grub2: out-of-bounds read at fs/ntfs.c (CVE-2023-4693)

Tenable has extracted the preceding description block directly from the Rocky Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Tencent Linux installed on the remote TencentOS Server 4 host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the TSSA-2024:0948 advisory.

    Package updates are available for TencentOS Server 4 that fix the following vulnerabilities:

    CVE-2022-2601:
    An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker     to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some     circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a result, arbitrary code     execution and secure boot protection bypass may be achieved.

    CVE-2023-4693:
    An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This issue may allow a physically     present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations.
    A successful attack allows sensitive data cached in memory or EFI variable values to be leaked, presenting     a high Confidentiality risk.

    CVE-2023-4692:
    A buffer overflow was found in grub_font_construct_glyph(). A malicious crafted pf2 font can lead to an     overflow when calculating the max_glyph_size value, allocating a smaller than needed buffer for the glyph,     this further leads to a buffer overflow and a heap based out-of-bounds write. An attacker may use this     vulnerability to circumvent the secure boot mechanism.

    CVE-2022-3775:
    When rendering certain unicode sequences, grub2/'s font code doesn/'t proper validate if the informed     glyph/'s width and height is constrained within bitmap size. As consequence an attacker can craft an input     which will lead to a out-of-bounds write into grub2/'s heap, leading to memory corruption and availability     issues. Although complex, arbitrary code execution could not be discarded.

    CVE-2022-28736:
    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.

    CVE-2021-3981:
    A flaw in grub2 was found where its configuration file, known as grub.cfg, is being created with the wrong     permission set allowing non privileged users to read its content. This represents a low severity     confidentiality issue, as those users can eventually read any encrypted passwords present in grub.cfg.
    This flaw affects grub2 2.06 and previous versions. This issue has been fixed in grub upstream but no     version with the fix is currently released.

    CVE-2022-28733:
    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.

    CVE-2022-28735:
    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.

    CVE-2022-28734:
    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.

Tenable has extracted the preceding description block directly from the Tencent Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of AOS installed on the remote host is prior to 7.0. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-7.0 advisory.

  - squashfs_opendir in unsquash-2.c in Squashfs-Tools 4.5 allows Directory Traversal, a different     vulnerability than CVE-2021-40153. A squashfs filesystem that has been crafted to include a symbolic link     and then contents under the same filename in a filesystem can cause unsquashfs to first create the     symbolic link pointing outside the expected directory, and then the subsequent write operation will cause     the unsquashfs process to write through the symbolic link elsewhere in the filesystem. (CVE-2021-41072)

  - An issue was discovered in libexpat before 2.6.3. nextScaffoldPart in xmlparse.c can have an integer     overflow for m_groupSize on 32-bit platforms (where UINT_MAX equals SIZE_MAX). (CVE-2024-45492)

  - A vulnerability was found in libndp. This flaw allows a local malicious user to cause a buffer overflow in     NetworkManager, triggered by sending a malformed IPv6 router advertisement packet. This issue occurred as     libndp was not correctly validating the route length information. (CVE-2024-5564)

  - Python Packaging Authority (PyPA) setuptools before 65.5.1 allows remote attackers to cause a denial of     service via HTML in a crafted package or custom PackageIndex page. There is a Regular Expression Denial of     Service (ReDoS) in package_index.py. (CVE-2022-40897)

  - cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. In     affected versions `Cipher.update_into` would accept Python objects which implement the buffer protocol,     but provide only immutable buffers. This would allow immutable objects (such as `bytes`) to be mutated,     thus violating fundamental rules of Python and resulting in corrupted output. This now correctly raises an     exception. This issue has been present since `update_into` was originally introduced in cryptography 1.8.
    (CVE-2023-23931)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the grub2 packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker     to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some     circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a result, arbitrary code     execution and secure boot protection bypass may be achieved. (CVE-2023-4692)

  - An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This issue may allow a physically     present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations.
    A successful attack allows sensitive data cached in memory or EFI variable values to be leaked, presenting     a high Confidentiality risk. (CVE-2023-4693)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2024:0211 advisory.

    Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

    CVE-2023-4692:
    An out-of-bounds write flaw was found in grub2's NTFS filesystem driver. This issue may allow an attacker     to present a specially crafted NTFS filesystem image, leading to grub's heap metadata corruption. In some     circumstances, the attack may also corrupt the UEFI firmware heap metadata. As a result, arbitrary code     execution and secure boot protection bypass may be achieved.

    CVE-2023-4693:
    An out-of-bounds read flaw was found on grub2's NTFS filesystem driver. This issue may allow a physically     present attacker to present a specially crafted NTFS file system image to read arbitrary memory locations.
    A successful attack allows sensitive data cached in memory or EFI variable values to be leaked, presenting     a high Confidentiality risk.

    CVE-2024-1048:
    A flaw was found in the grub2-set-bootflag utility of grub2. After the fix of CVE-2019-14865, grub2-set-     bootflag will create a temporary file with the new grubenv content and rename it to the original grubenv     file. If the program is killed before the rename operation, the temporary file will not be removed and may     fill the filesystem when invoked multiple times, resulting in a filesystem out of free inodes or blocks.

Tenable has extracted the preceding description block directly from the Alibaba Cloud Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 40 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2024-2b545d3085 advisory.

    Security fix for CVE-2023-4692

    Security fix for CVE-2023-4693

    Fri Apr 12 2024 Nicolas Frayer <nfrayer@redhat.com> - 2.06-121

    - fs/xfs: Handle non-continuous data blocks in directory extents
    - Related: #2254370

    Fri Mar 08 2024 Nicolas Frayer <nfrayer@redhat.com> - 2.06-120

    - GRUB2 NTFS driver vulnerabilities
    - (CVE-2023-4692)
    - (CVE-2023-4693)
    - Resolves: #2236613
    - Resolves: #2241978
    - Resolves: #2241976
    - Resolves: #2238343


Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:2456 advisory.

    The grub2 packages provide version 2 of the Grand Unified Boot Loader (GRUB), a highly configurable and     customizable boot loader with modular architecture. The packages support a variety of kernel formats, file     systems, computer architectures, and hardware devices.

    Security Fix(es):

    * grub2: grub2-set-bootflag can be abused by local (pseudo-)users (CVE-2024-1048)

    * grub2: Out-of-bounds write at fs/ntfs.c may lead to unsigned code execution (CVE-2023-4692)

    * grub2: out-of-bounds read at fs/ntfs.c (CVE-2023-4693)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

    Additional Changes:

    For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.4 Release Notes     linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
195073	Oracle Linux 9 : grub2 (ELSA-2024-2456)	Nessus	Oracle Linux Local Security Checks	2024/5/6	2024/11/2	high
200600	Rocky Linux 8 : grub2 (RLSA-2024:3184)	Nessus	Rocky Linux Local Security Checks	2024/6/14	2024/6/14	high
238900	TencentOS Server 4: grub2 (TSSA-2024:0948)	Nessus	Tencent Local Security Checks	2025/6/16	2025/11/20	high
212124	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-7.0)	Nessus	Misc.	2024/12/6	2026/6/30	medium
197286	EulerOS Virtualization 3.0.6.0 : grub2 (EulerOS-SA-2024-1683)	Nessus	Huawei Local Security Checks	2024/5/17	2024/5/17	high
188905	EulerOS Virtualization 2.9.0 : grub2 (EulerOS-SA-2024-1009)	Nessus	Huawei Local Security Checks	2024/1/16	2024/1/16	high
236159	Alibaba Cloud Linux 3 : 0211: grub2 (ALINUX3-SA-2024:0211)	Nessus	Alibaba Cloud Linux Local Security Checks	2025/5/14	2025/5/14	high
194692	Fedora 40 : grub2 (2024-2b545d3085)	Nessus	Fedora Local Security Checks	2024/4/29	2024/11/14	high
194779	RHEL 9 : grub2 (RHSA-2024:2456)	Nessus	Red Hat Local Security Checks	2024/4/30	2024/11/7	high

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