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Ubuntu 11.04 : linux vulnerabilities (USN-1457-1)

high Nessus Plugin ID 59321

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Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

Andy Adamson discovered a flaw in the Linux kernel's NFSv4 implementation. A remote NFS server (attacker) could exploit this flaw to cause a denial of service. (CVE-2011-4131)

A flaw was found in the Linux kernel's KVM (Kernel Virtual Machine) virtual cpu setup. An unprivileged local user could exploit this flaw to crash the system leading to a denial of service. (CVE-2012-1601)

A flaw was discovered in the Linux kernel's KVM (kernel virtual machine). An administrative user in the guest OS could leverage this flaw to cause a denial of service in the host OS. (CVE-2012-2121)

Steve Grubb reported a flaw with Linux fscaps (file system base capabilities) when used to increase the permissions of a process. For application on which fscaps are in use a local attacker can disable address space randomization to make attacking the process with raised privileges easier. (CVE-2012-2123)

Schacher Raindel discovered a flaw in the Linux kernel's memory handling when hugetlb is enabled. An unprivileged local attacker could exploit this flaw to cause a denial of service and potentially gain higher privileges. (CVE-2012-2133).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected packages.

See Also

https://usn.ubuntu.com/1457-1/

Plugin Details

Severity: High

ID: 59321

File Name: ubuntu_USN-1457-1.nasl

Version: 1.11

Type: local

Agent: unix

Published: 6/1/2012

Updated: 9/19/2019

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: High

Base Score: 7.2

Temporal Score: 5.3

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6-server, p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6-versatile, p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6-generic-pae, cpe:/o:canonical:ubuntu_linux:11.04, p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-2.6-virtual

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/31/2012

Vulnerability Publication Date: 5/17/2012

Reference Information

CVE: CVE-2011-4131, CVE-2012-1601, CVE-2012-2121, CVE-2012-2123, CVE-2012-2133

USN: 1457-1