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Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-2563-1)

critical Nessus Plugin ID 82662

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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-2563-1 advisory.

 Sun Baoliang discovered a use after free flaw in the Linux kernel's SCTP (Stream Control Transmission Protocol) subsystem during INIT collisions. A remote attacker could exploit this flaw to cause a denial of service (system crash) or potentially escalate their privileges on the system. (CVE-2015-1421)

 Marcelo Leitner discovered a flaw in the Linux kernel's routing of packets to too many different dsts/too fast. A remote attacker on the same subnet can exploit this flaw to cause a denial of service (system crash). (CVE-2015-1465)

 An integer overflow was discovered in the stack randomization feature of the Linux kernel on 64 bit platforms. A local attacker could exploit this flaw to bypass the Address Space Layout Randomization (ASLR) protection mechanism. (CVE-2015-1593)

 An information leak was discovered in the Linux Kernel's handling of userspace configuration of the link layer control (LLC). A local user could exploit this flaw to read data from other sysctl settings.
 (CVE-2015-2041)

 An information leak was discovered in how the Linux kernel handles setting the Reliable Datagram Sockets (RDS) settings. A local user could exploit this flaw to read data from other sysctl settings.
 (CVE-2015-2042)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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-2563-1

Plugin Details

Severity: Critical

ID: 82662

File Name: ubuntu_USN-2563-1.nasl

Version: 1.16

Type: local

Agent: unix

Published: 4/9/2015

Updated: 8/27/2024

Supported Sensors: Agentless Assessment, Continuous 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-2015-1421

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

CVSS Score Source: CVE-2015-1465

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-49-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-49-powerpc64-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-49-powerpc-e500, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-49-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-49-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-49-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-49-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-49-powerpc-e500mc

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: 4/8/2015

Vulnerability Publication Date: 3/16/2015

Reference Information

CVE: CVE-2015-1421, CVE-2015-1465, CVE-2015-1593, CVE-2015-2041, CVE-2015-2042

BID: 72356, 72435

USN: 2563-1