This update for fwupd fixes the following issues :

  - CVE-2020-10759: Fixed a potential PGP signature bypass,     which could have led to installation of unsigned     firmware (bsc#1172643)

This update was imported from the SUSE:SLE-15-SP1:Update update project.

The remote host is affected by the vulnerability described in GLSA-202007-04 (fwupd, libjcat: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in fwupd and libjcat.
      Please review the CVE identifiers referenced below for details.
  Impact :

    Please review the referenced CVE identifiers for details.
  Workaround :

    There is no known workaround at this time.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2020:4436 advisory.

    The gnome-software packages contain an application that makes it easy to add, remove, and update software     in the GNOME desktop.

    The appstream-data package provides the distribution specific AppStream metadata required for the GNOME     and KDE software centers.

    The fwupd packages provide a service that allows session software to update device firmware.

    The following packages have been upgraded to a later upstream version: gnome-software (3.36.1), fwupd     (1.4.2).

    Security Fix(es):

    * fwupd: Possible bypass in signature verification (CVE-2020-10759)

    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 8.3 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 this issue but has instead relied only on the application's self-reported version number.

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-4395-1 advisory.

    Justin Steven discovered that fwupd incorrectly handled certain signature verification. An attacker could     possibly use this issue to install an unsigned firmware.

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

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

It was discovered that there was a possible signature verification issue in firmware update daemon library 'fwupd' as the return value of gpgme_op_verify_result was not being checked.

For Debian 9 'Stretch', this issue has been fixed in fwupd version 0.7.4-2+deb9u1.

We recommend that you upgrade your fwupd packages.

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

The remote Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2020:4436 advisory.

  - A PGP signature bypass flaw was found in fwupd (all versions), which could lead to the installation of     unsigned firmware. As per upstream, a signature bypass is theoretically possible, but not practical     because the Linux Vendor Firmware Service (LVFS) is either not implemented or enabled in versions of fwupd     shipped with Red Hat Enterprise Linux 7 and 8. The highest threat from this vulnerability is to     confidentiality and integrity. (CVE-2020-10759)

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

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2021:0048 advisory.

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

    CVE-2020-10713:
    A flaw was found in grub2, prior to version 2.06. An attacker may use the GRUB 2 flaw to hijack and tamper     the GRUB verification process. This flaw also allows the bypass of Secure Boot protections. In order to     load an untrusted or modified kernel, an attacker would first need to establish access to the system such     as gaining physical access, obtain the ability to alter a pxe-boot network, or have remote access to a     networked system with root access. With this access, an attacker could then craft a string to cause a     buffer overflow by injecting a malicious payload that leads to arbitrary code execution within GRUB. The     highest threat from this vulnerability is to data confidentiality and integrity as well as system     availability.

    CVE-2020-10759:
    A PGP signature bypass flaw was found in fwupd (all versions), which could lead to the installation of     unsigned firmware. As per upstream, a signature bypass is theoretically possible, but not practical     because the Linux Vendor Firmware Service (LVFS) is either not implemented or enabled in versions of fwupd     shipped with Red Hat Enterprise Linux 7 and 8. The highest threat from this vulnerability is to     confidentiality and integrity.

    CVE-2020-14372:
    A flaw was found in grub2 in versions prior to 2.06, where it incorrectly enables the usage of the ACPI     command when Secure Boot is enabled. This flaw allows an attacker with privileged access to craft a     Secondary System Description Table (SSDT) containing code to overwrite the Linux kernel lockdown variable     content directly into memory. The table is further loaded and executed by the kernel, defeating its Secure     Boot lockdown and allowing the attacker to load unsigned code. The highest threat from this vulnerability     is to data confidentiality and integrity, as well as system availability.

    CVE-2020-25632:
    A flaw was found in grub2 in versions prior to 2.06. The rmmod implementation allows the unloading of a     module used as a dependency without checking if any other dependent module is still loaded leading to a     use-after-free scenario. This could allow arbitrary code to be executed or a bypass of Secure Boot     protections. The highest threat from this vulnerability is to data confidentiality and integrity as well     as system availability.

    CVE-2020-25647:
    A flaw was found in grub2 in versions prior to 2.06. During USB device initialization, descriptors are     read with very little bounds checking and assumes the USB device is providing sane values. If properly     exploited, an attacker could trigger memory corruption leading to arbitrary code execution allowing a     bypass of the Secure Boot mechanism. The highest threat from this vulnerability is to data confidentiality     and integrity as well as system availability.

    CVE-2020-27749:
    A flaw was found in grub2 in versions prior to 2.06. Variable names present are expanded in the supplied     command line into their corresponding variable contents, using a 1kB stack buffer for temporary storage,     without sufficient bounds checking. If the function is called with a command line that references a     variable with a sufficiently large payload, it is possible to overflow the stack buffer, corrupt the stack     frame and control execution which could also circumvent Secure Boot protections. The highest threat from     this vulnerability is to data confidentiality and integrity as well as system availability.

    CVE-2020-27779:
    A flaw was found in grub2 in versions prior to 2.06. The cutmem command does not honor secure boot locking     allowing an privileged attacker to remove address ranges from memory creating an opportunity to circumvent     SecureBoot protections after proper triage about grub's memory layout. The highest threat from this     vulnerability is to data confidentiality and integrity as well as system availability.

    CVE-2021-20225:
    A flaw was found in grub2 in versions prior to 2.06. The option parser allows an attacker to write past     the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms     of options. The highest threat from this vulnerability is to data confidentiality and integrity as well as     system availability.

    CVE-2021-20233:
    A flaw was found in grub2 in versions prior to 2.06. Setparam_prefix() in the menu rendering code performs     a length calculation on the assumption that expressing a quoted single quote will require 3 characters,     while it actually requires 4 characters which allows an attacker to corrupt memory by one byte for each     quote in the input. The highest threat from this vulnerability is to data confidentiality and integrity as     well as system availability.

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.

ID	Name	Product	Family	Published	Updated	Severity
138696	openSUSE Security Update : fwupd (openSUSE-2020-849)	Nessus	SuSE Local Security Checks	7/20/2020	2/29/2024	medium
138927	GLSA-202007-04 : fwupd, libjcat: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	7/27/2020	2/28/2024	medium
142404	RHEL 8 : gnome-software and fwupd (RHSA-2020:4436)	Nessus	Red Hat Local Security Checks	11/4/2020	3/15/2025	medium
137553	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : fwupd vulnerability (USN-4395-1)	Nessus	Ubuntu Local Security Checks	6/17/2020	8/29/2024	medium
138364	Debian DLA-2274-1 : fwupd security update	Nessus	Debian Local Security Checks	7/10/2020	3/1/2024	medium
184872	Rocky Linux 8 : gnome-software and fwupd (RLSA-2020:4436)	Nessus	Rocky Linux Local Security Checks	11/7/2023	11/7/2023	medium
236732	Alibaba Cloud Linux 3 : 0048: fwupd (ALINUX3-SA-2021:0048)	Nessus	Alibaba Cloud Linux Local Security Checks	5/14/2025	5/15/2025	high

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