CVE-2018-7191

Aliases:UBUNTU-CVE-2018-7191DEBIAN-CVE-2018-7191
Advisory lineage Upstream: 0 Downstream: 18
Modified
Published: 17 May 2019, 04:27
Last modified:05 Aug 2024, 06:24

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
5.5 MEDIUM
v3.0 (nvd)
EPSS Score
0.65% LOW
1% probability +0.58%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

17 May 2019, 04:27
Published
Vulnerability first disclosed
05 Aug 2024, 06:24
Last Modified
Vulnerability information updated

Description

In the tun subsystem in the Linux kernel before 4.13.14, dev_get_valid_name is not called before register_netdevice. This allows 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. This is similar to CVE-2013-4343.

CVSS Metrics

  • v4.0•MEDIUM•Score: 4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  • v3.0•MEDIUM•Score: 5.5CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 4.9AV:L/AC:L/Au:N/C:N/I:N/A:C

EPSS Trends

Current EPSS score: 0.65%• Percentile: 50%

Techniques & Countermeasures

  • CWE-476•NULL Pointer Dereference

    The product dereferences a pointer that it expects to be valid but is NULL.

Affected Systems

  • debian•linux

    < 4.14.2-1 | < 4.14.2-1 | < 4.14.2-1 | < 4.14.2-1

  • ubuntu•linux

    all

  • ubuntu•linux-aws

    all

  • ubuntu•linux-aws-5.4

    all

  • ubuntu•linux-aws-fips

    all

  • ubuntu•linux-aws-hwe

    all

  • ubuntu•linux-azure

    all

  • ubuntu•linux-azure-4.15

    all

  • ubuntu•linux-azure-5.4

    all

  • ubuntu•linux-azure-fde

    all

  • ubuntu•linux-azure-fde-5.15

    < 5.15.0-1114.123~20.04.1

  • ubuntu•linux-azure-fips

    all

  • ubuntu•linux-bluefield

    all | all

  • ubuntu•linux-fips

    all

  • ubuntu•linux-gcp

    all

  • ubuntu•linux-gcp-4.15

    all

  • ubuntu•linux-gcp-5.4

    all

  • ubuntu•linux-gcp-fips

    all

  • ubuntu•linux-gke

    all

  • ubuntu•linux-gkeop-5.15

    all

  • ubuntu•linux-hwe

    all

  • ubuntu•linux-hwe-5.4

    all

  • ubuntu•linux-ibm

    all

  • ubuntu•linux-ibm-5.4

    all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-iot

    all

  • ubuntu•linux-kvm

    all

  • ubuntu•linux-lts-xenial

    all

  • ubuntu•linux-oracle

    all

  • ubuntu•linux-oracle-5.4

    all

  • ubuntu•linux-raspi

    all

  • ubuntu•linux-raspi-5.4

    all

  • ubuntu•linux-raspi-realtime

    all

  • ubuntu•linux-raspi2

    < 4.4.0-1086.94 | all

  • ubuntu•linux-realtime

    all

  • ubuntu•linux-riscv

    all | all

  • ubuntu•linux-snapdragon

    < 4.4.0-1088.93 | < 4.15.0-1053.57

  • ubuntu•linux-xilinx-zynqmp

    all

  • linux•linux_kernel

    < 4.13.14

References (16)