Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-2614-1)

critical Nessus Plugin ID 83760

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-2614-1 advisory.

- include/net/netfilter/nf_conntrack_extend.h in the netfilter subsystem in the Linux kernel before 3.14.5 uses an insufficiently large data type for certain extension data, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via outbound network traffic that triggers extension loading, as demonstrated by configuring a PPTP tunnel in a NAT environment. (CVE-2014-9715)

- Xen 3.3.x through 4.5.x and the Linux kernel through 3.19.1 do not properly restrict access to PCI command registers, which might allow local guest OS users to cause a denial of service (non-maskable interrupt and host crash) by disabling the (1) memory or (2) I/O decoding for a PCI Express device and then accessing the device, which triggers an Unsupported Request (UR) response. (CVE-2015-2150)

- arch/x86/kernel/entry_64.S in the Linux kernel before 3.19.2 does not prevent the TS_COMPAT flag from reaching a user-mode task, which might allow local users to bypass the seccomp or audit protection mechanism via a crafted application that uses the (1) fork or (2) close system call, as demonstrated by an attack against seccomp before 3.16. (CVE-2015-2830)

- The __driver_rfc4106_decrypt function in arch/x86/crypto/aesni-intel_glue.c in the Linux kernel before 3.19.3 does not properly determine the memory locations used for encrypted data, which allows context- dependent attackers to cause a denial of service (buffer overflow and system crash) or possibly execute arbitrary code by triggering a crypto API call, as demonstrated by use of a libkcapi test program with an AF_ALG(aead) socket. (CVE-2015-3331)

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-2614-1

Plugin Details

Severity: Critical

ID: 83760

File Name: ubuntu_USN-2614-1.nasl

Version: 2.16

Type: local

Agent: unix

Published: 5/21/2015

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: 5.9

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

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

CVSS Score Source: CVE-2015-3331

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

CVSS Score Source: CVE-2015-2150

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-53-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-53-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-53-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-53-powerpc-e500, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-53-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-53-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-53-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-53-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 Ease: No known exploits are available

Patch Publication Date: 5/20/2015

Vulnerability Publication Date: 3/12/2015

Reference Information

CVE: CVE-2014-9715, CVE-2015-2150, CVE-2015-2830, CVE-2015-3331

BID: 73014, 73699, 73953, 74235

USN: 2614-1