Detections
Analytics

Ubuntu 16.04 LTS : AppArmor update (USN-4008-2)

medium Nessus Plugin ID 125767

Language:

Synopsis

The remote Ubuntu host is missing a security update.

Description

USN-4008-1 fixed multiple security issues in the Linux kernel. This update provides the corresponding changes to AppArmor policy for correctly operating under the Linux kernel with fixes for CVE-2019-11190. Without these changes, some profile transitions may be unintentionally denied due to missing mmap ('m') rules.

Original advisory details :

Robert Swiecki discovered that the Linux kernel did not properly apply Address Space Layout Randomization (ASLR) in some situations for setuid elf binaries. A local attacker could use this to improve the chances of exploiting an existing vulnerability in a setuid elf binary. (CVE-2019-11190)

It was discovered that a NULL pointer dereference vulnerability existed in the LSI Logic MegaRAID driver in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2019-11810)

It was discovered that a race condition leading to a use-after-free existed in the Reliable Datagram Sockets (RDS) protocol implementation in the Linux kernel. The RDS protocol is blacklisted by default in Ubuntu. If enabled, a local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
(CVE-2019-11815)

Federico Manuel Bento discovered that the Linux kernel did not properly apply Address Space Layout Randomization (ASLR) in some situations for setuid a.out binaries. A local attacker could use this to improve the chances of exploiting an existing vulnerability in a setuid a.out binary.
(CVE-2019-11191)

As a hardening measure, this update disables a.out support.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-4008-2

Plugin Details

Severity: Medium

ID: 125767

File Name: ubuntu_USN-4008-2.nasl

Version: 1.6

Type: local

Agent: unix

Published: 6/7/2019

Updated: 10/20/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 3.7

Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:N/A:N

CVSS Score Source: CVE-2019-11190

CVSS v3

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 4.2

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:apparmor-profiles, p-cpe:/a:canonical:ubuntu_linux:apparmor-utils, p-cpe:/a:canonical:ubuntu_linux:dh-apparmor, p-cpe:/a:canonical:ubuntu_linux:libapache2-mod-apparmor, p-cpe:/a:canonical:ubuntu_linux:libapparmor-dev, p-cpe:/a:canonical:ubuntu_linux:libapparmor-perl, p-cpe:/a:canonical:ubuntu_linux:libapparmor1, p-cpe:/a:canonical:ubuntu_linux:libpam-apparmor, p-cpe:/a:canonical:ubuntu_linux:python-apparmor, p-cpe:/a:canonical:ubuntu_linux:python-libapparmor, p-cpe:/a:canonical:ubuntu_linux:python3-apparmor, p-cpe:/a:canonical:ubuntu_linux:python3-libapparmor, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:apparmor, p-cpe:/a:canonical:ubuntu_linux:apparmor-easyprof, p-cpe:/a:canonical:ubuntu_linux:apparmor-notify

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/5/2019

Vulnerability Publication Date: 4/12/2019

Reference Information

CVE: CVE-2019-11190

USN: 4008-2