Ubuntu 14.04 LTS : Linux kernel vulnerabilities (USN-2544-1)

high Nessus Plugin ID 82071

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-2544-1 advisory.

- The Crypto API in the Linux kernel before 3.18.5 allows local users to load arbitrary kernel modules via a bind system call for an AF_ALG socket with a module name in the salg_name field, a different vulnerability than CVE-2014-9644. (CVE-2013-7421)

- The implementation of certain splice_write file operations in the Linux kernel before 3.16 does not enforce a restriction on the maximum size of a single file, which allows local users to cause a denial of service (system crash) or possibly have unspecified other impact via a crafted splice system call, as demonstrated by use of a file descriptor associated with an ext4 filesystem. (CVE-2014-7822)

- The Crypto API in the Linux kernel before 3.18.5 allows local users to load arbitrary kernel modules via a bind system call for an AF_ALG socket with a parenthesized module template expression in the salg_name field, as demonstrated by the vfat(aes) expression, a different vulnerability than CVE-2013-7421.
(CVE-2014-9644)

- The UDF filesystem implementation in the Linux kernel before 3.18.2 does not validate certain lengths, which allows local users to cause a denial of service (buffer over-read and system crash) via a crafted filesystem image, related to fs/udf/inode.c and fs/udf/symlink.c. (CVE-2014-9728)

- The udf_read_inode function in fs/udf/inode.c in the Linux kernel before 3.18.2 does not ensure a certain data-structure size consistency, which allows local users to cause a denial of service (system crash) via a crafted UDF filesystem image. (CVE-2014-9729)

- The udf_pc_to_char function in fs/udf/symlink.c in the Linux kernel before 3.18.2 relies on component lengths that are unused, which allows local users to cause a denial of service (system crash) via a crafted UDF filesystem image. (CVE-2014-9730)

- The UDF filesystem implementation in the Linux kernel before 3.18.2 does not ensure that space is available for storing a symlink target's name along with a trailing \0 character, which allows local users to obtain sensitive information via a crafted filesystem image, related to fs/udf/symlink.c and fs/udf/unicode.c. (CVE-2014-9731)

- The XFS implementation in the Linux kernel before 3.15 improperly uses an old size value during remote attribute replacement, which allows local users to cause a denial of service (transaction overrun and data corruption) or possibly gain privileges by leveraging XFS filesystem access. (CVE-2015-0274)

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-2544-1

Plugin Details

Severity: High

ID: 82071

File Name: ubuntu_USN-2544-1.nasl

Version: 1.17

Type: local

Agent: unix

Published: 3/25/2015

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: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS Score Source: CVE-2015-0274

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/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-2014-9730

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-48-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-48-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-48-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-48-powerpc-e500, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-48-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-48-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-48-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13.0-48-powerpc64-smp, cpe:/o:canonical:ubuntu_linux:14.04:-:lts

Required KB Items: Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/24/2015

Vulnerability Publication Date: 3/2/2015

Reference Information

CVE: CVE-2013-7421, CVE-2014-7822, CVE-2014-9644, CVE-2014-9728, CVE-2014-9729, CVE-2014-9730, CVE-2014-9731, CVE-2015-0274

BID: 72320, 72322, 73156

USN: 2544-1