CVE-2020-15704

Publication date 4 August 2020

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

5.5 · Medium

Score breakdown

Description

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
ppp 20.04 LTS focal
Fixed 2.4.7-2+4.1ubuntu5.1
18.04 LTS bionic
Fixed 2.4.7-2+2ubuntu1.3
16.04 LTS xenial
Fixed 2.4.7-1+2ubuntu1.16.04.3
14.04 LTS trusty
Fixed 2.4.5-5.1ubuntu2.3+esm2

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Notes

mdeslaur

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

Severity score breakdown

Parameter Value
Base score 5.5 · Medium
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

References

Related Ubuntu Security Notices (USN)

Other references