The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3821-1 advisory.

  - Linux kernel is vulnerable to a stack-out-of-bounds write in the ext4 filesystem code when mounting and     writing to a crafted ext4 image in ext4_update_inline_data(). An attacker could use this to cause a system     crash and a denial of service. (CVE-2018-10880)

  - The alarm_timer_nsleep function in kernel/time/alarmtimer.c in the Linux kernel through 4.17.3 has an     integer overflow via a large relative timeout because ktime_add_safe is not used. (CVE-2018-13053)

  - An issue was discovered in fs/f2fs/super.c in the Linux kernel through 4.14. A denial of service (out-of-     bounds memory access and BUG) can occur upon encountering an abnormal bitmap size when mounting a crafted     f2fs image. (CVE-2018-13096)

  - An issue was discovered in the Linux kernel through 4.17.10. There is an invalid pointer dereference in
    __del_reloc_root() in fs/btrfs/relocation.c when mounting a crafted btrfs image, related to removing reloc     rb_trees when reloc control has not been initialized. (CVE-2018-14609)

  - An issue was discovered in the Linux kernel through 4.17.10. There is a NULL pointer dereference and panic     in hfsplus_lookup() in fs/hfsplus/dir.c when opening a file (that is purportedly a hard link) in an hfs+     filesystem that has malformed catalog data, and is mounted read-only without a metadata directory.
    (CVE-2018-14617)

  - An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through     4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a     local attacker to exploit racy stack unwinding and leak kernel task stack contents. (CVE-2018-17972)

  - arch/arm64/kvm/guest.c in KVM in the Linux kernel before 4.18.12 on the arm64 platform mishandles the     KVM_SET_ON_REG ioctl. This is exploitable by attackers who can create virtual machines. An attacker can     arbitrarily redirect the hypervisor flow of control (with full register control). An attacker can also     cause a denial of service (hypervisor panic) via an illegal exception return. This occurs because of     insufficient restrictions on userspace access to the core register file, and because PSTATE.M validation     does not prevent unintended execution modes. (CVE-2018-18021)

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 16.04 LTS : Linux kernel vulnerabilities (USN-3821-1)

high Nessus Plugin ID 118971

Version 1.11

Version 1.10

Version 1.10

Version 1.11 Jan 10, 2024, 8:45 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202401100845
Version 1.10 Oct 23, 2023, 4:39 PM CVSS temporal metrics ("CVSSv2 temporal vector" set to "CVSS2#E:POC/RL:OF/RC:C". "CVSSv3 temporal vector" set to "CVSS:3.0/E:P/RL:O/RC:C") CVSSv3 score source (set to "CVE-2018-18021") Detection Exploit attributes ("Exploit available" set to "True". "Exploitability ease" changed from "No known exploits are available" to "Exploits are available") Plugin metadata Plugin Feed: 202310231639
Version 1.10 Jan 9, 2024, 6:56 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202401091856