Detections
Analytics

Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4008-1)

high Nessus Plugin ID 125726

Language:

Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4008-1 advisory.

 - The Linux kernel before 4.8 allows local users to bypass ASLR on setuid programs (such as /bin/su) because install_exec_creds() is called too late in load_elf_binary() in fs/binfmt_elf.c, and thus the ptrace_may_access() check has a race condition when reading /proc/pid/stat. (CVE-2019-11190)

 - The Linux kernel through 5.0.7, when CONFIG_IA32_AOUT is enabled and ia32_aout is loaded, allows local users to bypass ASLR on setuid a.out programs (if any exist) because install_exec_creds() is called too late in load_aout_binary() in fs/binfmt_aout.c, and thus the ptrace_may_access() check has a race condition when reading /proc/pid/stat. NOTE: the software maintainer disputes that this is a vulnerability because ASLR for a.out format executables has never been supported (CVE-2019-11191)

 - An issue was discovered in the Linux kernel before 5.0.7. A NULL pointer dereference can occur when megasas_create_frame_pool() fails in megasas_alloc_cmds() in drivers/scsi/megaraid/megaraid_sas_base.c.
 This causes a Denial of Service, related to a use-after-free. (CVE-2019-11810)

 - An issue was discovered in rds_tcp_kill_sock in net/rds/tcp.c in the Linux kernel before 5.0.8. There is a race condition leading to a use-after-free, related to net namespace cleanup. (CVE-2019-11815)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected kernel package.

See Also

https://ubuntu.com/security/notices/USN-4008-1

Plugin Details

Severity: High

ID: 125726

File Name: ubuntu_USN-4008-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 6/5/2019

Updated: 1/9/2024

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 7.3

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

CVSS Score Source: CVE-2019-11815

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1047-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1084-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1110-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1114-snapdragon, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-150-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-150-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-150-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-150-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-150-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-150-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-150-powerpc64-smp, cpe:/o:canonical:ubuntu_linux:16.04:-:lts

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/4/2019

Vulnerability Publication Date: 4/12/2019

Reference Information

CVE: CVE-2019-11190, CVE-2019-11191, CVE-2019-11810, CVE-2019-11815

USN: 4008-1