CVE-2019-10220

Description

Linux kernel CIFS implementation, version 4.9.0 is vulnerable to a relative paths injection in directory entry lists.

CVSS Metrics

• v3.1•HIGH•Score: 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
• v3.0•HIGH•Score: 8CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
• v2.0•HIGH•Score: 9.3AV:N/AC:M/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.74%• Percentile: 73%

Techniques & Countermeasures

• CWE-22•Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

  The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Affected Systems

• canonical•ubuntu_linux

  18.04 | 19.04

• debian•debian_linux

  8.0

• linux•linux_kernel

  ≥ 2.6.12, < 3.16.81 | ≥ 3.17, < 4.4.208 | ≥ 4.5, < 4.9.208 | ≥ 4.10, < 4.14.162 | ≥ 4.15, < 4.19.93 | ≥ 4.20, < 5.3.8

• suse•kernel:

  kernel version 4.9.0

References (5)

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10220
• https://security.netapp.com/advisory/ntap-20200103-0001/
• https://usn.ubuntu.com/4226-1/
• https://lists.debian.org/debian-lts-announce/2020/01/msg00013.html
• https://lists.debian.org/debian-lts-announce/2020/03/msg00001.html