CVE Vulnerabilities

CVE-2019-3692

Improper Link Resolution Before File Access ('Link Following')

Published: Jan 24, 2020 | Modified: Nov 16, 2022
CVSS 3.x
7.8
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.2 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

The packaging of inn on SUSE Linux Enterprise Server 11; openSUSE Factory, Leap 15.1 allows local attackers to escalate from user inn to root via symlink attacks. This issue affects: SUSE Linux Enterprise Server 11 inn version 2.4.2-170.21.3.1 and prior versions. openSUSE Factory inn version 2.6.2-2.2 and prior versions. openSUSE Leap 15.1 inn version 2.5.4-lp151.2.47 and prior versions.

Weakness

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Affected Software

Name Vendor Start Version End Version
Inn Suse * 2.4.2-170.21.3.1 (including)

Potential Mitigations

  • Follow the principle of least privilege when assigning access rights to entities in a software system.
  • Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

References