Ubuntu 14.04 LTS : Linux kernel (Utopic HWE) vulnerabilities (USN-2682-1)

high Nessus Plugin ID 84983

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-2682-1 advisory.

- The kvm_apic_has_events function in arch/x86/kvm/lapic.h in the Linux kernel through 4.1.3 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by leveraging /dev/kvm access for an ioctl call. (CVE-2015-4692)

- The (1) udp_recvmsg and (2) udpv6_recvmsg functions in the Linux kernel before 4.0.6 do not properly consider yielding a processor, which allows remote attackers to cause a denial of service (system hang) via incorrect checksums within a UDP packet flood. (CVE-2015-5364)

- The (1) udp_recvmsg and (2) udpv6_recvmsg functions in the Linux kernel before 4.0.6 provide inappropriate
-EAGAIN return values, which allows remote attackers to cause a denial of service (EPOLLET epoll application read outage) via an incorrect checksum in a UDP packet, a different vulnerability than CVE-2015-5364. (CVE-2015-5366)

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-2682-1

Plugin Details

Severity: High

ID: 84983

File Name: ubuntu_USN-2682-1.nasl

Version: 2.14

Type: local

Agent: unix

Published: 7/24/2015

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: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2015-5364

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

CVSS Score Source: CVE-2015-5366

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-44-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-44-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-44-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-44-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-44-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-44-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.16.0-44-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 Ease: No known exploits are available

Patch Publication Date: 7/23/2015

Vulnerability Publication Date: 7/27/2015

Reference Information

CVE: CVE-2015-4692, CVE-2015-5364, CVE-2015-5366

USN: 2682-1