Debian LTS Advisory ([SECURITY] [DLA 1919-1] linux-4.9 security update)

Published: 2019-09-14 02:00:24
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:L/Au:N/C:C/I:C/A:C

Summary:
The remote host is missing an update for the 'linux-4.9' Linux Distribution Package(s) announced via the DSA-1919-1 advisory.

Detection Method:
Checks if a vulnerable Linux Distribution Package version is present on the target host.

Technical Details:
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 ... Description truncated. Please see the references for more information.

Affected Versions:
'linux-4.9' Linux Distribution Package(s) on Debian Linux.

Recommendations:
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 Linux Distribution Packages.

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2019-0136
https://nvd.nist.gov/vuln/detail/CVE-2019-11487
https://nvd.nist.gov/vuln/detail/CVE-2019-15211
https://nvd.nist.gov/vuln/detail/CVE-2019-15212
https://nvd.nist.gov/vuln/detail/CVE-2019-15215
https://nvd.nist.gov/vuln/detail/CVE-2019-15216
https://nvd.nist.gov/vuln/detail/CVE-2019-15218
https://nvd.nist.gov/vuln/detail/CVE-2019-15219
https://nvd.nist.gov/vuln/detail/CVE-2019-15220
https://nvd.nist.gov/vuln/detail/CVE-2019-15221
https://nvd.nist.gov/vuln/detail/CVE-2019-15292
https://nvd.nist.gov/vuln/detail/CVE-2019-15538
https://nvd.nist.gov/vuln/detail/CVE-2019-15666
https://nvd.nist.gov/vuln/detail/CVE-2019-15807
https://nvd.nist.gov/vuln/detail/CVE-2019-15924
https://nvd.nist.gov/vuln/detail/CVE-2019-15926
https://nvd.nist.gov/vuln/detail/CVE-2019-9506

References:

https://lists.debian.org/debian-lts-announce/2019/09/msg00014.html
https://security-tracker.debian.org/tracker/DLA-1919-1
https://bugs.debian.org/930904

Severity
High
CVSS Score
10.0
Published
2019-09-14
Modified
2019-09-14
Category
Debian Local Security Checks

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