Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-2841-1)

low Nessus Plugin ID 87466

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-2841-1 advisory.

- The slhc_init function in drivers/net/slip/slhc.c in the Linux kernel through 4.2.3 does not ensure that certain slot numbers are valid, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted PPPIOCSMAXCID ioctl call. (CVE-2015-7799)

- The dgnc_mgmt_ioctl function in drivers/staging/dgnc/dgnc_mgmt.c in the Linux kernel through 4.3.3 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel memory via a crafted application. (CVE-2015-7885)

- The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a denial of service (host OS panic or hang) by triggering many #DB (aka Debug) exceptions, related to svm.c. (CVE-2015-8104)

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-2841-1

Plugin Details

Severity: Low

ID: 87466

File Name: ubuntu_USN-2841-1.nasl

Version: 2.16

Type: local

Agent: unix

Published: 12/17/2015

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: Medium

Score: 4.9

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2015-7885

CVSS v3

Risk Factor: Low

Base Score: 2.3

Temporal Score: 2.1

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

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-73-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-73-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-73-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-73-powerpc-e500, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-73-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-73-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-73-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-73-powerpc64-smp, cpe:/o:canonical:ubuntu_linux:14.04:-: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: 12/17/2015

Vulnerability Publication Date: 10/19/2015

Reference Information

CVE: CVE-2015-7799, CVE-2015-7885, CVE-2015-8104

USN: 2841-1