Ubuntu 14.04 LTS : Linux kernel (Vivid HWE) vulnerabilities (USN-2889-2)

critical Nessus Plugin ID 88523

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-2889-2 advisory.

- Use-after-free vulnerability in net/unix/af_unix.c in the Linux kernel before 4.3.3 allows local users to bypass intended AF_UNIX socket permissions or cause a denial of service (panic) via crafted epoll_ctl calls. (CVE-2013-7446)

- arch/x86/kvm/x86.c in the Linux kernel before 4.4 does not reset the PIT counter values during state restoration, which allows guest OS users to cause a denial of service (divide-by-zero error and host OS crash) via a zero value, related to the kvm_vm_ioctl_set_pit and kvm_vm_ioctl_set_pit2 functions.
(CVE-2015-7513)

- Race condition in the rds_sendmsg function in net/rds/sendmsg.c in the Linux kernel before 4.3.3 allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by using a socket that was not properly bound. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-6937. (CVE-2015-7990)

- fs/btrfs/inode.c in the Linux kernel before 4.3.3 mishandles compressed inline extents, which allows local users to obtain sensitive pre-truncation information from a file via a clone action. (CVE-2015-8374)

- The nf_nat_redirect_ipv4 function in net/netfilter/nf_nat_redirect.c in the Linux kernel before 4.4 allows remote attackers to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact by sending certain IPv4 packets to an incompletely configured interface, a related issue to CVE-2003-1604. (CVE-2015-8787)

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-2889-2

Plugin Details

Severity: Critical

ID: 88523

File Name: ubuntu_USN-2889-2.nasl

Version: 2.16

Type: local

Agent: unix

Published: 2/2/2016

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: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2015-8787

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-3.19.0-49-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.19.0-49-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.19.0-49-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.19.0-49-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.19.0-49-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.19.0-49-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.19.0-49-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: 2/1/2016

Vulnerability Publication Date: 12/28/2015

Reference Information

CVE: CVE-2013-7446, CVE-2015-7513, CVE-2015-7990, CVE-2015-8374, CVE-2015-8787

USN: 2889-2