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
| Author | Note |
|---|---|
| mdeslaur | This is ZDI-CAN-11504 Issue is located in a Ubuntu-specific patch |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
ppp Launchpad, Ubuntu, Debian |
upstream |
Needs triage
|
| 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)
|
|
| bionic |
Released
(2.4.7-2+2ubuntu1.3)
|
|
| focal |
Released
(2.4.7-2+4.1ubuntu5.1)
|
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 |