Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2015-3055)

medium Nessus Plugin ID 85176

Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2015-3055 advisory.

- arch/x86/kernel/tls.c in the Thread Local Storage (TLS) implementation in the Linux kernel through 3.18.1 allows local users to bypass the espfix protection mechanism, and consequently makes it easier for local users to bypass the ASLR protection mechanism, via a crafted application that makes a set_thread_area system call and later reads a 16-bit value. (CVE-2014-8133)

- Off-by-one error in the ecryptfs_decode_from_filename function in fs/ecryptfs/crypto.c in the eCryptfs subsystem in the Linux kernel before 3.18.2 allows local users to cause a denial of service (buffer overflow and system crash) or possibly gain privileges via a crafted filename. (CVE-2014-9683)

- The em_sysenter function in arch/x86/kvm/emulate.c in the Linux kernel before 3.18.5, when the guest OS lacks SYSENTER MSR initialization, allows guest OS users to gain guest OS privileges or cause a denial of service (guest OS crash) by triggering use of a 16-bit code segment for emulation of a SYSENTER instruction. (CVE-2015-0239)

- Race condition in the prepare_binprm function in fs/exec.c in the Linux kernel before 3.19.6 allows local users to gain privileges by executing a setuid program at a time instant when a chown to root is in progress, and the ownership is changed but the setuid bit is not yet stripped. (CVE-2015-3339)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://linux.oracle.com/errata/ELSA-2015-3055.html

Plugin Details

Severity: Medium

ID: 85176

File Name: oraclelinux_ELSA-2015-3055.nasl

Version: 2.12

Type: local

Agent: unix

Published: 8/3/2015

Updated: 9/8/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Vector: AV:L/AC:H/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2015-3339

Vulnerability Information

CPE: cpe:/o:oracle:linux:5, cpe:/o:oracle:linux:6, p-cpe:/a:oracle:linux:kernel-uek, p-cpe:/a:oracle:linux:kernel-uek-debug, p-cpe:/a:oracle:linux:kernel-uek-debug-devel, p-cpe:/a:oracle:linux:kernel-uek-devel, p-cpe:/a:oracle:linux:kernel-uek-doc, p-cpe:/a:oracle:linux:kernel-uek-firmware, p-cpe:/a:oracle:linux:mlnx_en-2.6.32-400.37.9.el5uek, p-cpe:/a:oracle:linux:mlnx_en-2.6.32-400.37.9.el5uekdebug, p-cpe:/a:oracle:linux:mlnx_en-2.6.32-400.37.9.el6uek, p-cpe:/a:oracle:linux:mlnx_en-2.6.32-400.37.9.el6uekdebug, p-cpe:/a:oracle:linux:ofa-2.6.32-400.37.9.el5uek, p-cpe:/a:oracle:linux:ofa-2.6.32-400.37.9.el5uekdebug, p-cpe:/a:oracle:linux:ofa-2.6.32-400.37.9.el6uek, p-cpe:/a:oracle:linux:ofa-2.6.32-400.37.9.el6uekdebug

Required KB Items: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

Exploit Ease: No known exploits are available

Patch Publication Date: 7/31/2015

Vulnerability Publication Date: 12/15/2014

Reference Information

CVE: CVE-2014-8133, CVE-2014-9683, CVE-2015-0239, CVE-2015-3339