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CVE-2020-15704

Published: 4 August 2020

The modprobe child process in the ./debian/patches/load_ppp_generic_if_needed patch file incorrectly handled module loading. A local non-root attacker could exploit the MODPROBE_OPTIONS environment variable to read arbitrary root files. Fixed in 2.4.5-5ubuntu1.4, 2.4.5-5.1ubuntu2.3+esm2, 2.4.7-1+2ubuntu1.16.04.3, 2.4.7-2+2ubuntu1.3, 2.4.7-2+4.1ubuntu5.1, 2.4.7-2+4.1ubuntu6. Was ZDI-CAN-11504.

Notes

AuthorNote
mdeslaur
This is ZDI-CAN-11504
Issue is located in a Ubuntu-specific patch

Priority

Medium

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
ppp
Launchpad, Ubuntu, Debian
upstream Needs triage

bionic
Released (2.4.7-2+2ubuntu1.3)
focal
Released (2.4.7-2+4.1ubuntu5.1)
trusty
Released (2.4.5-5.1ubuntu2.3+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
xenial
Released (2.4.7-1+2ubuntu1.16.04.3)

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N