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Ubuntu 14.04 LTS : Linux kernel (Vivid HWE) vulnerabilities (USN-3053-1)

high Nessus Plugin ID 92863

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Synopsis

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

Description

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3053-1 advisory.

 - nfsd in the Linux kernel through 4.6.3 allows local users to bypass intended file-permission restrictions by setting a POSIX ACL, related to nfs2acl.c, nfs3acl.c, and nfs4acl.c. (CVE-2016-1237)

 - The key_reject_and_link function in security/keys/key.c in the Linux kernel through 4.6.3 does not ensure that a certain data structure is initialized, which allows local users to cause a denial of service (system crash) via vectors involving a crafted keyctl request2 command. (CVE-2016-4470)

 - Use-after-free vulnerability in mm/percpu.c in the Linux kernel through 4.6 allows local users to cause a denial of service (BUG) or possibly have unspecified other impact via crafted use of the mmap and bpf system calls. (CVE-2016-4794)

 - The tipc_nl_compat_link_dump function in net/tipc/netlink_compat.c in the Linux kernel through 4.6.3 does not properly copy a certain string, which allows local users to obtain sensitive information from kernel stack memory by reading a Netlink message. (CVE-2016-5243)

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-3053-1

Plugin Details

Severity: High

ID: 92863

File Name: ubuntu_USN-3053-1.nasl

Version: 2.13

Type: local

Agent: unix

Published: 8/11/2016

Updated: 1/9/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS Score Source: CVE-2016-4794

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/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-3.19.0-66-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.19.0-66-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.19.0-66-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.19.0-66-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.19.0-66-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.19.0-66-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.19.0-66-powerpc64-smp, cpe:/o:canonical:ubuntu_linux:14.04:-:lts

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: 8/10/2016

Vulnerability Publication Date: 5/23/2016

Reference Information

CVE: CVE-2016-1237, CVE-2016-4470, CVE-2016-4794, CVE-2016-5243

USN: 3053-1