CVE-2020-15704
published 2020-09-01CVE-2020-15704: 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…
PriorityP429medium5.5CVSS 3.1
AVLACLPRLUINSUCHINAN
EPSS
0.36%
29.1th percentile
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.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| canonical | ppp | < 2.4.7-1\+ubuntu1.16.04.3 | 2.4.7-1\+ubuntu1.16.04.3 |
| canonical | ppp | < 2.4.7-2\+2ubuntu1.3 | 2.4.7-2\+2ubuntu1.3 |
| canonical | ppp | < 2.4.7-2\+4.1ubuntu5.1 | 2.4.7-2\+4.1ubuntu5.1 |
| canonical | ppp | < 2.4.5-5ubuntu1.4 | 2.4.5-5ubuntu1.4 |
| canonical | ppp | < 2.4.5-5.1ubuntu2.3\+esm2 | 2.4.5-5.1ubuntu2.3\+esm2 |
| canonical | ppp | >= 2.4.5 < 2.4.5-5ubuntu1.4 | 2.4.5-5ubuntu1.4 |
| canonical | ppp | >= 2.4.7 < 2.4.7-1+2ubuntu1.16.04.3 | 2.4.7-1+2ubuntu1.16.04.3 |
| debian | ppp | — | — |
| samba | ppp | >= 0 < 2.4.7-1+2ubuntu1.16.04.3 | 2.4.7-1+2ubuntu1.16.04.3 |
| samba | ppp | >= 0 < 2.4.7-2+2ubuntu1.3 | 2.4.7-2+2ubuntu1.3 |
| samba | ppp | >= 0 < 2.4.7-2+4.1ubuntu5.1 | 2.4.7-2+4.1ubuntu5.1 |
| samba | ppp | >= 0 < 2.4.5-5.1ubuntu2.3+esm2 | 2.4.5-5.1ubuntu2.3+esm2 |
CVSS provenance
nvdv3.15.5MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
nvdv2.02.1LOWAV:L/AC:L/Au:N/C:P/I:N/A:N
osv5.5MEDIUM
vendor_debian5.5LOW
vendor_redhat5.5MEDIUM
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Ubuntu
ppp vulnerability
vendor_ubuntu·2020-08-06
CVE-2020-15704 ppp vulnerability
Title: ppp vulnerability
Summary: ppp could be made to load arbitrary kernel modules and possibly run
programs.
USN-4451-1 fixed a vulnerability in ppp. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.
Original advisory details:
Thomas Chauchefoin working with Trend Micro´s Zero Day Initiative,
discovered that ppp incorrectly handled module loading. A local attacker
could use this issue to load arbitrary kernel modules and possibly execute
arbitrary code.
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
ppp: Privilege escalation through loading of arbitrary kernel modules and other programs
vendor_redhat·2020-08-05·CVSS 5.5
CVE-2020-15704 [MEDIUM] CWE-552 ppp: Privilege escalation through loading of arbitrary kernel modules and other programs
ppp: Privilege escalation through loading of arbitrary kernel modules and other programs
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.
A flaw in the Linux ppp daemon functionality was found in the way possibility of unexpected loading ppp_generic module during ppp daemon startup.
Statement: Red Hat Product Security does not consider this to be a vulnerability in a Red Hat product as this issue resides in Ubuntu specific patch.
Moreover, the de
Ubuntu
ppp vulnerability
vendor_ubuntu·2020-08-04
CVE-2020-15704 ppp vulnerability
Title: ppp vulnerability
Summary: ppp could be made to load arbitrary kernel modules and possibly run
programs.
Thomas Chauchefoin working with Trend Micro´s Zero Day Initiative,
discovered that ppp incorrectly handled module loading. A local attacker
could use this issue to load arbitrary kernel modules and possibly execute
arbitrary code.
Instructions: In general, a standard system update will make all the necessary changes.
Debian
CVE-2020-15704: ppp - The modprobe child process in the ./debian/patches/load_ppp_generic_if_needed pa...
vendor_debian·2020·CVSS 5.5
CVE-2020-15704 [MEDIUM] CVE-2020-15704: ppp - The modprobe child process in the ./debian/patches/load_ppp_generic_if_needed pa...
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.
Scope: local
bookworm: resolved
bullseye: resolved
forky: resolved
sid: resolved
trixie: resolved
GHSA
GHSA-2q4h-xfv6-4848: The modprobe child process in the
ghsa_unreviewed·2022-05-24
CVE-2020-15704 [LOW] CWE-20 GHSA-2q4h-xfv6-4848: The modprobe child process in the
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.
OSV
CVE-2020-15704: The modprobe child process in the
osv·2020-08-04·CVSS 5.5
CVE-2020-15704 [MEDIUM] CVE-2020-15704: The modprobe child process in the
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.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-15704 ppp: Privilege escalation through loading of arbitrary kernel modules and other programs [fedora-all]
bugzilla·2020-08-05·CVSS 5.5
CVE-2020-15704 [MEDIUM] CVE-2020-15704 ppp: Privilege escalation through loading of arbitrary kernel modules and other programs [fedora-all]
CVE-2020-15704 ppp: Privilege escalation through loading of arbitrary kernel modules and other programs [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this is
Bugzilla
CVE-2020-15704 ppp: Privilege escalation through loading of arbitrary kernel modules and other programs
bugzilla·2020-08-05·CVSS 5.5
CVE-2020-15704 [MEDIUM] CVE-2020-15704 ppp: Privilege escalation through loading of arbitrary kernel modules and other programs
CVE-2020-15704 ppp: Privilege escalation through loading of arbitrary kernel modules and other programs
It was found that ppp incorrectly handled module loading. A local attacker could use this issue to load arbitrary kernel modules and possibly execute arbitrary code.
References:
https://ubuntu.com/security/notices/USN-4451-1
Discussion:
Created ppp tracking bugs for this issue:
Affects: fedora-all [bug 1866492]
---
Could you please provide more information? From the Ubuntu link you provided it seems the problem was in Ubuntu downstream patch we never shipped in Fedora.
Also I don't understand how this could be security problem. If the malicious user who is running ppp has already permissions to use modprobe and install kernel modules to filesystem, she or he could modprobe/run t
2020-09-01
Published