Lucene search

K
debian
DebianDEBIAN:DLA-1919-1:239EC
HistorySep 14, 2019 - 12:21 a.m.

[SECURITY] [DLA 1919-1] linux-4.9 security update

2019-09-1400:21:38
lists.debian.org
230

9.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

10 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

0.019 Low

EPSS

Percentile

88.1%

Package : linux-4.9
Version : 4.9.189-3~deb8u1
CVE ID : CVE-2019-0136 CVE-2019-9506 CVE-2019-11487 CVE-2019-15211
CVE-2019-15212 CVE-2019-15215 CVE-2019-15216 CVE-2019-15218
CVE-2019-15219 CVE-2019-15220 CVE-2019-15221 CVE-2019-15292
CVE-2019-15538 CVE-2019-15666 CVE-2019-15807 CVE-2019-15924
CVE-2019-15926
Debian Bug : 930904

Several vulnerabilities have been discovered in the Linux kernel that
may lead to a privilege escalation, denial of service or information
leaks.

CVE-2019-0136

It was discovered that the wifi soft-MAC implementation (mac80211)
did not properly authenticate Tunneled Direct Link Setup (TDLS)
messages.  A nearby attacker could use this for denial of service
(loss of wifi connectivity).

CVE-2019-9506

Daniele Antonioli, Nils Ole Tippenhauer, and Kasper Rasmussen
discovered a weakness in the Bluetooth pairing protocols, dubbed
the "KNOB attack".  An attacker that is nearby during pairing
could use this to weaken the encryption used between the paired
devices, and then to eavesdrop on and/or spoof communication
between them.

This update mitigates the attack by requiring a minimum encryption
key length of 56 bits.

CVE-2019-11487

Jann Horn discovered that the FUSE (Filesystem-in-Userspace)
facility could be used to cause integer overflow in page reference
counts, leading to a use-after-free.  On a system with sufficient
physical memory, a local user permitted to create arbitrary FUSE
mounts could use this for privilege escalation.

By default, unprivileged users can only mount FUSE filesystems
through fusermount, which limits the number of mounts created and
should completely mitigate the issue.

CVE-2019-15211

The syzkaller tool found a bug in the radio-raremono driver that
could lead to a use-after-free.  An attacker able to add and
remove USB devices could use this to cause a denial of service
(memory corruption or crash) or possibly for privilege escalation.

CVE-2019-15212

The syzkaller tool found that the rio500 driver does not work
correctly if more than one device is bound to it.  An attacker
able to add USB devices could use this to cause a denial of
service (memory corruption or crash) or possibly for privilege
escalation.

CVE-2019-15215

The syzkaller tool found a bug in the cpia2_usb driver that leads
to a use-after-free.  An attacker able to add and remove USB
devices could use this to cause a denial of service (memory
corruption or crash) or possibly for privilege escalation.

CVE-2019-15216

The syzkaller tool found a bug in the yurex driver that leads to
a use-after-free.  An attacker able to add and remove USB
devices could use this to cause a denial of service (memory
corruption or crash) or possibly for privilege escalation.

CVE-2019-15218

The syzkaller tool found that the smsusb driver did not validate
that USB devices have the expected endpoints, potentially leading
to a null pointer dereference.  An attacker able to add USB
devices could use this to cause a denial of service (BUG/oops).

CVE-2019-15219

The syzkaller tool found that a device initialisation error in the
sisusbvga driver could lead to a null pointer dereference.  An
attacker able to add USB devices could use this to cause a denial
of service (BUG/oops).

CVE-2019-15220

The syzkaller tool found a race condition in the p54usb driver
which could lead to a use-after-free.  An attacker able to add and
remove USB devices could use this to cause a denial of service
(memory corruption or crash) or possibly for privilege escalation.

CVE-2019-15221

The syzkaller tool found that the line6 driver did not validate
USB devices' maximum packet sizes, which could lead to a heap
buffer overrun.  An attacker able to add USB devices could use
this to cause a denial of service (memory corruption or crash) or
possibly for privilege escalation.

CVE-2019-15292

The Hulk Robot tool found missing error checks in the Appletalk
protocol implementation, which could lead to a use-after-free.
The security impact of this is unclear.

CVE-2019-15538

Benjamin Moody reported that operations on XFS hung after a
chgrp command failed due to a disk quota.  A local user on a
system using XFS and disk quotas could use this for denial of
service.

CVE-2019-15666

The Hulk Robot tool found an incorrect range check in the network
transformation (xfrm) layer, leading to out-of-bounds memory
accesses.  A local user with CAP_NET_ADMIN capability (in any user
namespace) could use this to cause a denial of service (memory
corruption or crash) or possibly for privilege escalation.

CVE-2019-15807

Jian Luo reported that the Serial Attached SCSI library (libsas)
did not correctly handle failure to discover devices beyond a SAS
expander.  This could lead to a resource leak and crash (BUG).
The security impact of this is unclear.

CVE-2019-15924

The Hulk Robot tool found a missing error check in the fm10k
Ethernet driver, which could lead to a null pointer dereference
and crash (BUG/oops).  The security impact of this is unclear.

CVE-2019-15926

It was found that the ath6kl wifi driver did not consistently
validate traffic class numbers in received control packets,
leading to out-of-bounds memory accesses.  A nearby attacker on
the same wifi network could use this to cause a denial of service
(memory corruption or crash) or possibly for privilege escalation.

For Debian 8 "Jessie", these problems have been fixed in version
4.9.189-3~deb8u1.

We recommend that you upgrade your linux-4.9 packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

โ€“
Ben Hutchings - Debian developer, member of kernel, installer and LTS teams
Attachment:
signature.asc
Description: This is a digitally signed message part

How to protect your server from attacks?

9.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

10 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

0.019 Low

EPSS

Percentile

88.1%

Related for DEBIAN:DLA-1919-1:239EC