The remote Redhat Enterprise Linux 5 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - kernel: netfilter: use-after-free in tcpmss_mangle_packet function in net/netfilter/xt_TCPMSS.c     (CVE-2017-18017)

  - The ia64 subsystem in the Linux kernel before 2.6.26 allows local users to cause a denial of service     (stack consumption and system crash) via a crafted application that leverages the mishandling of invalid     Register Stack Engine (RSE) state. (CVE-2006-3635)

  - drivers/media/video/videobuf-vmalloc.c in the Linux kernel before 2.6.24 does not initialize     videobuf_mapping data structures, which allows local users to trigger an incorrect count value and     videobuf leak via unspecified vectors, a different vulnerability than CVE-2010-5321. (CVE-2007-6761)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:1199 advisory.

    KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of     architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines     that use KVM in environments managed by Red Hat products.

    Security Fix(es):

    * A flaw was found in the implementation of the fill buffer, a mechanism used by modern CPUs when a     cache-miss is made on L1 CPU cache. If an attacker can generate a load operation that would create a page     fault, the execution will continue speculatively with incorrect data from the fill buffer while the data     is fetched from higher level caches. This response time can be measured to infer data in the fill buffer.
    (CVE-2018-12130)

    * Modern Intel microprocessors implement hardware-level micro-optimizations to improve the performance of     writing data back to CPU caches. The write operation is split into STA (STore Address) and STD (STore     Data) sub-operations. These sub-operations allow the processor to hand-off address generation logic into     these sub-operations for optimized writes. Both of these sub-operations write to a shared distributed     processor structure called the 'processor store buffer'. As a result, an unprivileged attacker could use     this flaw to read private data resident within the CPU's processor store buffer. (CVE-2018-12126)

    * Microprocessors use a load port subcomponent to perform load operations from memory or IO. During     a load operation, the load port receives data from the memory or IO subsystem and then provides the data     to the CPU registers and operations in the CPUs pipelines. Stale load operations results are stored in     the 'load port' table until overwritten by newer operations. Certain load-port operations triggered by an     attacker can be used to reveal data about previous stale requests leaking data back to the attacker via a     timing side-channel. (CVE-2018-12127)

    * Uncacheable memory on some microprocessors utilizing speculative execution may allow an authenticated     user to potentially enable information disclosure via a side channel with local access. (CVE-2019-11091)

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 Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:1200 advisory.

    KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of     architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines     that use KVM in environments managed by Red Hat products.

    Security Fix(es):

    * A flaw was found in the implementation of the fill buffer, a mechanism used by modern CPUs when a     cache-miss is made on L1 CPU cache. If an attacker can generate a load operation that would create a page     fault, the execution will continue speculatively with incorrect data from the fill buffer while the data     is fetched from higher level caches. This response time can be measured to infer data in the fill buffer.
    (CVE-2018-12130)

    * Modern Intel microprocessors implement hardware-level micro-optimizations to improve the performance of     writing data back to CPU caches. The write operation is split into STA (STore Address) and STD (STore     Data) sub-operations. These sub-operations allow the processor to hand-off address generation logic into     these sub-operations for optimized writes. Both of these sub-operations write to a shared distributed     processor structure called the 'processor store buffer'. As a result, an unprivileged attacker could use     this flaw to read private data resident within the CPU's processor store buffer. (CVE-2018-12126)

    * Microprocessors use a load port subcomponent to perform load operations from memory or IO. During     a load operation, the load port receives data from the memory or IO subsystem and then provides the data     to the CPU registers and operations in the CPUs pipelines. Stale load operations results are stored in     the 'load port' table until overwritten by newer operations. Certain load-port operations triggered by an     attacker can be used to reveal data about previous stale requests leaking data back to the attacker via a     timing side-channel. (CVE-2018-12127)

    * Uncacheable memory on some microprocessors utilizing speculative execution may allow an authenticated     user to potentially enable information disclosure via a side channel with local access. (CVE-2019-11091)

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 Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2019:1202 advisory.

    KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of     architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines     that use KVM in environments managed by Red Hat products.

    Security Fix(es):

    * A flaw was found in the implementation of the fill buffer, a mechanism used by modern CPUs when a     cache-miss is made on L1 CPU cache. If an attacker can generate a load operation that would create a page     fault, the execution will continue speculatively with incorrect data from the fill buffer while the data     is fetched from higher level caches. This response time can be measured to infer data in the fill buffer.
    (CVE-2018-12130)

    * Modern Intel microprocessors implement hardware-level micro-optimizations to improve the performance of     writing data back to CPU caches. The write operation is split into STA (STore Address) and STD (STore     Data) sub-operations. These sub-operations allow the processor to hand-off address generation logic into     these sub-operations for optimized writes. Both of these sub-operations write to a shared distributed     processor structure called the 'processor store buffer'. As a result, an unprivileged attacker could use     this flaw to read private data resident within the CPU's processor store buffer. (CVE-2018-12126)

    * Microprocessors use a load port subcomponent to perform load operations from memory or IO. During     a load operation, the load port receives data from the memory or IO subsystem and then provides the data     to the CPU registers and operations in the CPUs pipelines. Stale load operations results are stored in     the 'load port' table until overwritten by newer operations. Certain load-port operations triggered by an     attacker can be used to reveal data about previous stale requests leaking data back to the attacker via a     timing side-channel. (CVE-2018-12127)

    * Uncacheable memory on some microprocessors utilizing speculative execution may allow an authenticated     user to potentially enable information disclosure via a side channel with local access. (CVE-2019-11091)

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.

Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in denial of service, guest-to-host privilege escalation or information leaks.

In addition this update provides mitigations for the 'TSX Asynchronous Abort'speculative side channel attack. For additional information please refer to https://xenbits.xen.org/xsa/advisory-305.html

The SUSE Linux Enterprise 15 SP1 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2019-12819: The function __mdiobus_register() called put_device(), which triggered a fixed_mdio_bus_init use-after-free. This would cause a denial of service. (bsc#1138291)

CVE-2019-12818: The nfc_llcp_build_tlv function in net/nfc/llcp_commands.c may return NULL. If the caller does not check for this, it will trigger a NULL pointer dereference. This will cause denial of service. This used to affect nfc_llcp_build_gb in net/nfc/llcp_core.c. (bsc#1138293)

CVE-2019-11477: A sequence of SACKs may have been crafted such that one can trigger an integer overflow, leading to a kernel panic.

CVE-2019-11478: It was possible to send a crafted sequence of SACKs which will fragment the TCP retransmission queue. An attacker may have been able to further exploit the fragmented queue to cause an expensive linked-list walk for subsequent SACKs received for that same TCP connection.

CVE-2019-11479: An attacker could force the Linux kernel to segment its responses into multiple TCP segments. This would drastically increased the bandwidth required to deliver the same amount of data.
Further, it would consume additional resources such as CPU and NIC processing power.

CVE-2019-3846: A flaw that allowed an attacker to corrupt memory and possibly escalate privileges was found in the mwifiex kernel module while connecting to a malicious wireless network. (bsc#1136424)

CVE-2019-10124: An issue was discovered in the hwpoison implementation in mm/memory-failure.c in the Linux kernel. When soft_offline_in_use_page() runs on a thp tail page after pmd is split, an attacker could cause a denial of service (bsc#1130699, CVE-2019-10124).

CVE-2019-12382: An issue was discovered in drm_load_edid_firmware in drivers/gpu/drm/drm_edid_load.c in the Linux kernel There was an unchecked kstrdup of fwstr, which might allow an attacker to cause a denial of service (NULL pointer dereference and system crash).
(bsc#1136586)

CVE-2019-11487: The Linux kernel allowed page reference count overflow, with resultant use-after-free issues, if about 140 GiB of RAM exists. This is related to fs/fuse/dev.c, fs/pipe.c, fs/splice.c, include/linux/mm.h, include/linux/pipe_fs_i.h, kernel/trace/trace.c, mm/gup.c, and mm/hugetlb.c. It could occur with FUSE requests.
(bbsc#1133190)

CVE-2019-5489: The mincore() implementation in mm/mincore.c in the Linux kernel allowed local attackers to observe page cache access patterns of other processes on the same system, potentially allowing sniffing of secret information. (Fixing this affects the output of the fincore program.) Limited remote exploitation may be possible, as demonstrated by latency differences in accessing public files from an Apache HTTP Server. (bsc#1120843)

CVE-2019-11833: fs/ext4/extents.c in the Linux kernel did not zero out the unused memory region in the extent tree block, which might allow local users to obtain sensitive information by reading uninitialized data in the filesystem. (bsc#1135281)

CVE-2019-11091: Microarchitectural Data Sampling Uncacheable Memory (MDSUM): Uncacheable memory on some microprocessors utilizing speculative execution may have allowed an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here :

https://www.intel.com/content/dam/www/public/us/en/documents/corporate
-info rmation/SA00233-microcode-update-guidance_05132019.
(bsc##1111331) CVE-2018-7191: In the tun subsystem in the Linux kernel, dev_get_valid_name was not called before register_netdevice.
This allowed local users to cause a denial of service (NULL pointer dereference and panic) via an ioctl(TUNSETIFF) call with a dev name containing a / character. (bsc#1135603)

CVE-2018-12126 CVE-2018-12127 CVE-2018-12130: Microarchitectural Store Buffer Data Sampling (MSBDS): Stored buffers on some microprocessors utilizing speculative execution which may have allowed an authenticated user to potentially enable information disclosure via a side channel with local access. A list of impacted products can be found here :

https://www.intel.com/content/dam/www/public/us/en/documents/corporate
-info rmation/SA00233-microcode-update-guidance_05132019.
(bsc#1103186) CVE-2019-11085: Insufficient input validation in Kernel Mode Driver in Intel(R) i915 Graphics for Linux may have allowed an authenticated user to potentially enable escalation of privilege via local access. (bsc#1135278)

CVE-2019-11815: An issue was discovered in rds_tcp_kill_sock in net/rds/tcp.c in the Linux kernel There was a race condition leading to a use-after-free, related to net namespace cleanup. (bsc#1135278)

CVE-2019-11884: The do_hidp_sock_ioctl function in net/bluetooth/hidp/sock.c in the Linux kernel allowed a local user to obtain potentially sensitive information from kernel stack memory via a hidPCONNADD command, because a name field may not end with a '\0' character. (bsc#1134848)

CVE-2019-11811: An issue was discovered in the Linux kernel There was a use-after-free upon attempted read access to /proc/ioports after the ipmi_si module was removed, related to drivers/char/ipmi/ipmi_si_intf.c, drivers/char/ipmi/ipmi_si_mem_io.c, and drivers/char/ipmi/ipmi_si_port_io.c. (bsc#1134397)

CVE-2019-11486: The Siemens R3964 line discipline driver in drivers/tty/n_r3964.c in the Linux kernel has multiple race conditions. (bsc#1133188)

CVE-2019-9003: In the Linux kernel, attackers could trigger a drivers/char/ipmi/ipmi_msghandler.c use-after-free and OOPS by arranging for certain simultaneous execution of the code, as demonstrated by a 'service ipmievd restart' loop. (bsc#1126704)

CVE-2018-16880: A flaw was found in the Linux kernel's handle_rx() function in the [vhost_net] driver. A malicious virtual guest, under specific conditions, could trigger an out-of-bounds write in a kmalloc-8 slab on a virtual host which may have lead to a kernel memory corruption and a system panic. Due to the nature of the flaw, privilege escalation cannot be fully ruled out.(bsc#1122767)

CVE-2019-9503: An issue was discoved which meant that brcmfmac frame validation could be bypassed. (bsc#1132828)

CVE-2019-9500: An issue was discovered that lead to brcmfmac heap buffer overflow. (bsc#1132681)

CVE-2019-8564: An issue was discoved which meant that brcmfmac frame validation could be bypassed. (bsc#1132673)

CVE-2017-5753: Systems with microprocessors utilizing speculative execution and branch prediction may have allowed unauthorized disclosure of information to an attacker with local user access via a side-channel analysis.

CVE-2019-3882: A flaw was found in the Linux kernel's vfio interface implementation that permitted violation of the user's locked memory limit. If a device was bound to a vfio driver, such as vfio-pci, and the local attacker is administratively granted ownership of the device, it may have caused a system memory exhaustion and thus a denial of service (DoS). (bsc#1131427)

The update package also includes non-security fixes. See advisory for details.

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

ID	Name	Product	Family	Published	Updated	Severity
199257	RHEL 5 : kernel (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	6/3/2024	6/4/2024	critical
193984	RHEL 7 : qemu-kvm-rhev (RHSA-2019:1199)	Nessus	Red Hat Local Security Checks	4/27/2024	6/3/2024	medium
193990	RHEL 7 : qemu-kvm-rhev (RHSA-2019:1200)	Nessus	Red Hat Local Security Checks	4/27/2024	6/3/2024	medium
193996	RHEL 7 : qemu-kvm-rhev (RHSA-2019:1202)	Nessus	Red Hat Local Security Checks	4/27/2024	6/3/2024	medium
132875	Debian DSA-4602-1 : xen - security update (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout)	Nessus	Debian Local Security Checks	1/15/2020	5/27/2024	critical
126045	SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2019:1550-1) (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout) (SACK Panic) (SACK Slowness) (Spectre)	Nessus	SuSE Local Security Checks	6/19/2019	12/5/2022	high

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