CVE-2018-18690

Aliases:UBUNTU-CVE-2018-18690DEBIAN-CVE-2018-18690
Advisory lineage Upstream: 0 Downstream: 18
Modified
Published: 26 Oct 2018, 18:00
Last modified:05 Aug 2024, 11:16

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
5.5 MEDIUM
v3.0 (nvd)
EPSS Score
0.68% LOW
1% probability +0.63%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

26 Oct 2018, 18:00
Published
Vulnerability first disclosed
05 Aug 2024, 11:16
Last Modified
Vulnerability information updated

Description

In the Linux kernel before 4.17, a local attacker able to set attributes on an xfs filesystem could make this filesystem non-operational until the next mount by triggering an unchecked error condition during an xfs attribute change, because xfs_attr_shortform_addname in fs/xfs/libxfs/xfs_attr.c mishandles ATTR_REPLACE operations with conversion of an attr from short to long form.

CVSS Metrics

  • 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: 0.68%• Percentile: 51%

Techniques & Countermeasures

  • CWE-754•Improper Check for Unusual or Exceptional Conditions

    The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.

Affected Systems

  • canonical•ubuntu_linux

    12.04 | 14.04 | 16.04 | 18.04

  • debian•linux

    < 4.17.3-1 | < 4.17.3-1 | < 4.17.3-1 | < 4.17.3-1

  • ubuntu•linux

    < 3.13.0-164.214 | < 4.4.0-141.167 | < 4.15.0-43.46

  • ubuntu•linux-aws

    < 4.4.0-1037.40 | < 4.4.0-1074.84 | < 4.15.0-1031.33

  • ubuntu•linux-azure

    < 4.15.0-1036.38~14.04.2 | < 4.15.0-1036.38~16.04.1 | < 4.15.0-1036.38

  • ubuntu•linux-azure-6.11

    all

  • ubuntu•linux-azure-fde

    all

  • ubuntu•linux-azure-fde-5.15

    all

  • ubuntu•linux-fips

    < 4.4.0-1008.10

  • ubuntu•linux-gcp

    < 4.15.0-1026.27~16.04.1 | < 4.15.0-1026.27

  • ubuntu•linux-gcp-6.11

    all

  • ubuntu•linux-gke

    all

  • ubuntu•linux-hwe

    < 4.15.0-43.46~16.04.1

  • ubuntu•linux-hwe-6.11

    all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.4.0-1039.45 | < 4.15.0-1028.28

  • ubuntu•linux-lowlatency-hwe-6.11

    all

  • ubuntu•linux-lts-xenial

    < 4.4.0-141.167~14.04.1

  • ubuntu•linux-oem

    < 4.15.0-1030.35

  • ubuntu•linux-raspi-realtime

    all

  • ubuntu•linux-raspi2

    < 4.4.0-1102.110 | < 4.15.0-1030.32 | all

  • ubuntu•linux-realtime

    all

  • ubuntu•linux-riscv

    all | all

  • ubuntu•linux-snapdragon

    < 4.4.0-1106.111

  • debian•debian_linux

    8.0

  • linux•linux_kernel

    < 4.17

References (25)