Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2011-2029)

medium Nessus Plugin ID 68422
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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-2011-2029 advisory.

- Race condition in the ecryptfs_mount function in fs/ecryptfs/main.c in the eCryptfs subsystem in the Linux kernel before 3.1 allows local users to bypass intended file permissions via a mount.ecryptfs_private mount with a mismatched uid. (CVE-2011-1833)

- The add_del_listener function in kernel/taskstats.c in the Linux kernel 2.6.39.1 and earlier does not prevent multiple registrations of exit handlers, which allows local users to cause a denial of service (memory and CPU consumption), and bypass the OOM Killer, via a crafted application. (CVE-2011-2484)

- Integer overflow in the vma_to_resize function in mm/mremap.c in the Linux kernel before 2.6.39 allows local users to cause a denial of service (BUG_ON and system crash) via a crafted mremap system call that expands a memory mapping. (CVE-2011-2496)

- The skb_gro_header_slow function in include/linux/netdevice.h in the Linux kernel before 2.6.39.4, when Generic Receive Offload (GRO) is enabled, resets certain fields in incorrect situations, which allows remote attackers to cause a denial of service (system crash) via crafted network traffic. (CVE-2011-2723)

- net/packet/af_packet.c in the Linux kernel before 2.6.39.3 does not properly restrict user-space access to certain packet data structures associated with VLAN Tag Control Information, which allows local users to obtain potentially sensitive information via a crafted application. (CVE-2011-2898)

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-2011-2029.html

Plugin Details

Severity: Medium

ID: 68422

File Name: oraclelinux_ELSA-2011-2029.nasl

Version: 1.15

Type: local

Agent: unix

Published: 7/12/2013

Updated: 9/8/2021

Dependencies: linux_alt_patch_detect.nasl, ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2011-1833

VPR

Risk Factor: Medium

Score: 4

CVSS v2

Risk Factor: Medium

Base Score: 5.7

Vector: AV:A/AC:M/Au:N/C:N/I:N/A:C

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:kernel-uek-headers, p-cpe:/a:oracle:linux:ofa-2.6.32-200.20.1.el5uek, p-cpe:/a:oracle:linux:ofa-2.6.32-200.20.1.el5uekdebug, p-cpe:/a:oracle:linux:ofa-2.6.32-200.20.1.el6uek, p-cpe:/a:oracle:linux:ofa-2.6.32-200.20.1.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: 10/7/2011

Vulnerability Publication Date: 4/12/2011

Reference Information

CVE: CVE-2011-1833, CVE-2011-2484, CVE-2011-2496, CVE-2011-2723, CVE-2011-2898