The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:3220 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux operating system.

    Security Fix(es):

    * kernel: kernel: DAX hugepages not considered during mremap (CVE-2020-10757)

    * kernel: buffer overflow in mwifiex_cmd_append_vsie_tlv function in     drivers/net/wireless/marvell/mwifiex/scan.c (CVE-2020-12653)

    * kernel: heap-based buffer overflow in mwifiex_ret_wmm_get_status function in     drivers/net/wireless/marvell/mwifiex/wmm.c (CVE-2020-12654)

    * kernel: use-after-free caused by a malicious USB device in the drivers/hid/usbhid/hiddev.c driver     (CVE-2019-19527)

    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.

    Bug Fix(es):

    * RHEL7.7 - scsi: ibmvfc: Avoid loss of all paths during SVC node reboot (BZ#1830889)

    * [DELL EMC 7.8 BUG bnxt_en] Error messages related to hwrm observed for BCM 57504 under dmesg in RHEL 7.8     (BZ#1834190)

    * kernel: provide infrastructure to support dual-signing of the kernel (foundation to help address     CVE-2020-10713) (BZ#1837429)

    * RHEL7.7 - Request: retrofit kernel commit f82b4b6 to RHEL 7.7/7.8 3.10 kernels. (BZ#1838602)

    * kipmi thread high CPU consumption when performing BMC firmware upgrade (BZ#1841825)

    * RHEL7.7 - virtio-blk: fix hw_queue stopped on arbitrary error (kvm) (BZ#1842994)

    * rhel 7 infinite blocked waiting on inode_dio_wait in nfs (BZ#1845520)

    * http request is taking more time for endpoint running on different host via nodeport service     (BZ#1847333)

    * ext4: change LRU to round-robin in extent status tree shrinker (BZ#1847343)

    * libaio is returning duplicate events (BZ#1850055)

    * After upgrade to 3.9.89 pod containers with CPU limits fail to start due to cgroup error (BZ#1850500)

    * Fix dpdk regression introduced by bz1837297 (BZ#1852245)

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.

The remote SUSE Linux SLES11 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2020:14440-1 advisory.

  - 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-2020-10713)

  - In grub2 versions before 2.06 the grub memory allocator doesn't check for possible arithmetic overflows on     the requested allocation size. This leads the function to return invalid memory allocations which can be     further used to cause possible integrity, confidentiality and availability impacts during the boot     process. (CVE-2020-14308)

  - There's an issue with grub2 in all versions before 2.06 when handling squashfs filesystems containing a     symbolic link with name length of UINT32 bytes in size. The name size leads to an arithmetic overflow     leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled     data. (CVE-2020-14309)

  - There is an issue on grub2 before version 2.06 at function read_section_as_string(). It expects a font     name to be at max UINT32_MAX - 1 length in bytes but it doesn't verify it before proceed with buffer     allocation to read the value from the font value. An attacker may leverage that by crafting a malicious     font file which has a name with UINT32_MAX, leading to read_section_as_string() to an arithmetic overflow,     zero-sized allocation and further heap-based buffer overflow. (CVE-2020-14310)

  - There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems. A filesystem     containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow leading to a     zero-sized memory allocation with subsequent heap-based buffer overflow. (CVE-2020-14311)

  - GRUB2 contains a race condition in grub_script_function_create() leading to a use-after-free vulnerability     which can be triggered by redefining a function whilst the same function is already executing, leading to     arbitrary code execution and secure boot restriction bypass. This issue affects GRUB2 version 2.04 and     prior versions. (CVE-2020-15706)

  - Integer overflows were discovered in the functions grub_cmd_initrd and grub_initrd_init in the efilinux     component of GRUB2, as shipped in Debian, Red Hat, and Ubuntu (the functionality is not included in GRUB2     upstream), leading to a heap-based buffer overflow. These could be triggered by an extremely large number     of arguments to the initrd command on 32-bit architectures, or a crafted filesystem with very large files     on any architecture. An attacker could use this to execute arbitrary code and bypass UEFI Secure Boot     restrictions. This issue affects GRUB2 version 2.04 and prior versions. (CVE-2020-15707)

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

An update of the grub2 package has been released.

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-4432-2 advisory.

    USN-4432-1 fixed vulnerabilities in GRUB2 affecting Secure Boot environments. Unfortunately, the update     introduced regressions for some BIOS systems (either pre-UEFI or UEFI configured in Legacy mode),     preventing them from successfully booting. This update addresses the issue.

    Users with BIOS systems that installed GRUB2 versions from USN-4432-1 should verify that their GRUB2     installation has a correct understanding of their boot device location and installed the boot loader     correctly.

    We apologize for the inconvenience.

    Original advisory details:

    Jesse Michael and Mickey Shkatov discovered that the configuration parser

    in GRUB2 did not properly exit when errors were discovered, resulting in

    heap-based buffer overflows. A local attacker could use this to execute

    arbitrary code and bypass UEFI Secure Boot restrictions. (CVE-2020-10713)

    Chris Coulson discovered that the GRUB2 function handling code did not

    properly handle a function being redefined, leading to a use-after-free

    vulnerability. A local attacker could use this to execute arbitrary code

    and bypass UEFI Secure Boot restrictions. (CVE-2020-15706)

    Chris Coulson discovered that multiple integer overflows existed in GRUB2

    when handling certain filesystems or font files, leading to heap-based

    buffer overflows. A local attacker could use these to execute arbitrary

    code and bypass UEFI Secure Boot restrictions. (CVE-2020-14309,

    CVE-2020-14310, CVE-2020-14311)

    It was discovered that the memory allocator for GRUB2 did not validate

    allocation size, resulting in multiple integer overflows and heap-based

    buffer overflows when handling certain filesystems, PNG images or disk

    metadata. A local attacker could use this to execute arbitrary code and

    bypass UEFI Secure Boot restrictions. (CVE-2020-14308)

    Mathieu Trudel-Lapierre discovered that in certain situations, GRUB2

    failed to validate kernel signatures. A local attacker could use this

    to bypass Secure Boot restrictions. (CVE-2020-15705)

    Colin Watson and Chris Coulson discovered that an integer overflow

    existed in GRUB2 when handling the initrd command, leading to a heap-based

    buffer overflow. A local attacker could use this to execute arbitrary code

    and bypass UEFI Secure Boot restrictions. (CVE-2020-15707)

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.

ID	Name	Product	Family	Published	Updated	Severity
139199	RHEL 7 : kernel (RHSA-2020:3220)	Nessus	Red Hat Local Security Checks	7/30/2020	6/4/2024	high
150632	SUSE SLES11 Security Update : grub2 (SUSE-SU-2020:14440-1)	Nessus	SuSE Local Security Checks	6/10/2021	12/26/2023	high
203108	Photon OS 3.0: Grub2 PHSA-2020-3.0-0120	Nessus	PhotonOS Local Security Checks	7/23/2024	7/24/2024	high
139243	Photon OS 2.0: Grub2 PHSA-2020-2.0-0267	Nessus	PhotonOS Local Security Checks	8/1/2020	7/23/2024	high
139365	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : GRUB2 regression (USN-4432-2)	Nessus	Ubuntu Local Security Checks	8/6/2020	8/28/2024	medium

Detections

Analytics

Plugins Search

high

high

high

high

medium