The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5991-1 advisory.

  - A flaw was found in the Linux kernel. Measuring usage of the shared memory does not scale with large     shared memory segment counts which could lead to resource exhaustion and DoS. (CVE-2021-3669)

  - A use-after-free flaw was found in the Linux kernel's SGI GRU driver in the way the first     gru_file_unlocked_ioctl function is called by the user, where a fail pass occurs in the     gru_check_chiplet_assignment function. This flaw allows a local user to crash or potentially escalate     their privileges on the system. (CVE-2022-3424)

  - An out-of-bounds(OOB) memory access vulnerability was found in vmwgfx driver in     drivers/gpu/vmxgfx/vmxgfx_kms.c in GPU component in the Linux kernel with device file '/dev/dri/renderD128     (or Dxxx)'. This flaw allows a local attacker with a user account on the system to gain privilege, causing     a denial of service(DoS). (CVE-2022-36280)

  - In drivers/media/dvb-core/dmxdev.c in the Linux kernel through 5.19.10, there is a use-after-free caused     by refcount races, affecting dvb_demux_open and dvb_dmxdev_release. (CVE-2022-41218)

  - In the Linux kernel before 6.1.6, a NULL pointer dereference bug in the traffic control subsystem allows     an unprivileged user to trigger a denial of service (system crash) via a crafted traffic control     configuration that is set up with tc qdisc and tc class commands. This affects qdisc_graft in     net/sched/sch_api.c. (CVE-2022-47929)

  - The current implementation of the prctl syscall does not issue an IBPB immediately during the syscall. The     ib_prctl_set function updates the Thread Information Flags (TIFs) for the task and updates the SPEC_CTRL     MSR on the function __speculation_ctrl_update, but the IBPB is only issued on the next schedule, when the     TIF bits are checked. This leaves the victim vulnerable to values already injected on the BTB, prior to     the prctl syscall. The patch that added the support for the conditional mitigation via prctl     (ib_prctl_set) dates back to the kernel 4.9.176. We recommend upgrading past commit     a664ec9158eeddd75121d39c9a0758016097fa96 (CVE-2023-0045)

  - A use after free vulnerability exists in the ALSA PCM package in the Linux Kernel.
    SNDRV_CTL_IOCTL_ELEM_{READ|WRITE}32 is missing locks that can be used in a use-after-free that can result     in a priviledge escalation to gain ring0 access from the system user. We recommend upgrading past commit     56b88b50565cd8b946a2d00b0c83927b7ebb055e (CVE-2023-0266)

  - A NULL pointer dereference flaw was found in rawv6_push_pending_frames in net/ipv6/raw.c in the network     subcomponent in the Linux kernel. This flaw causes the system to crash. (CVE-2023-0394)

  - atm_tc_enqueue in net/sched/sch_atm.c in the Linux kernel through 6.1.4 allows attackers to cause a denial     of service because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition     rather than valid classification results). (CVE-2023-23455)

  - In rndis_query_oid in drivers/net/wireless/rndis_wlan.c in the Linux kernel through 6.1.5, there is an     integer overflow in an addition. (CVE-2023-23559)

  - A NULL pointer dereference flaw was found in the az6027 driver in drivers/media/usb/dev-usb/az6027.c in     the Linux Kernel. The message from user space is not checked properly before transferring into the device.
    This flaw allows a local user to crash the system or potentially cause a denial of service.
    (CVE-2023-28328)

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

Detections

Analytics

Ubuntu 18.04 LTS : Linux kernel (GCP) vulnerabilities (USN-5991-1)

high Nessus Plugin ID 173782

Version 1.3

Version 1.2

Version 1.2

Version 1.1

Version 1.1

Version 1.0

Version 1.3 Jan 10, 2024, 8:45 AM Plugin metadata Detection (updated detection logic) Plugin Feed: 202401100845
Version 1.2 Oct 16, 2023, 9:38 PM Plugin metadata Detection Plugin Feed: 202310162138
Version 1.2 Jan 9, 2024, 6:56 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202401091856
Version 1.1 Oct 16, 2023, 7:25 PM Plugin metadata Detection Plugin Feed: 202310161925
Version 1.1 May 8, 2023, 2:07 PM CVSSv3 score source (set to "CVE-2023-23559") CVSSv2 severity (based on CVE-2023-0045, severity increased from "Medium" to "High") CVSSv2 score source (changed from "CVE-2023-23559" to "CVE-2023-0045") CVSS metrics ("CVSSv2 score" changed from 6.8 to 7.8. "CVSSv2 score" changed from 6.8 to 7.8. "CVSSv2 score" changed from 6.8 to 7.8. "CVSSv2 vector" changed from "CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C" to "CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N". "CVSSv2 vector" changed from "CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C" to "CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N") Plugin Feed: 202305081407
Version 1.0 Apr 3, 2023, 12:08 PM New Plugin Feed: 202304031208