CVE-2020-15704

MEDIUM

ppp < 2.4.7-1+ubuntu1.16.04.3 - Arbitrary File Read via MODPROBE_OPTIONS Environment Variable

Title source: llm
STIX 2.1

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.

References (2)

Core 2
Core References
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://ubuntu.com/security/notices/USN-4451-1
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://ubuntu.com/security/notices/USN-4451-2

Scores

CVSS v3 5.5
EPSS 0.0010
EPSS Percentile 28.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-20 CWE-200
Status published
Products (1)
canonical/ppp < 2.4.7-1\+ubuntu1.16.04.3
Published Sep 01, 2020
Tracked Since Feb 18, 2026