Vulnerabilities > CVE-2011-4347 - Permissions, Privileges, and Access Controls vulnerability in Linux Kernel
Attack vector
LOCAL Attack complexity
HIGH Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
COMPLETE Summary
The kvm_vm_ioctl_assign_device function in virt/kvm/assigned-dev.c in the KVM subsystem in the Linux kernel before 3.1.10 does not verify permission to access PCI configuration space and BAR resources, which allows host OS users to assign PCI devices and cause a denial of service (host OS crash) via a KVM_ASSIGN_PCI_DEVICE operation.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Accessing, Modifying or Executing Executable Files An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
- Leverage Executable Code in Non-Executable Files An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
- Blue Boxing This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
- Restful Privilege Elevation Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
- Target Programs with Elevated Privileges This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.
Nessus
NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2012-0149.NASL description From Red Hat Security Advisory 2012:0149 : Updated kvm packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. KVM is a Linux kernel module built for the standard Red Hat Enterprise Linux kernel. It was found that the kvm_vm_ioctl_assign_device() function in the KVM subsystem of a Linux kernel did not check if the user requesting device assignment was privileged or not. A member of the kvm group on the host could assign unused PCI devices, or even devices that were in use and whose resources were not properly claimed by the respective drivers, which could result in the host crashing. (CVE-2011-4347) Red Hat would like to thank Sasha Levin for reporting this issue. These updated kvm packages include several bug fixes. Space precludes documenting all of these changes in this advisory. Users are directed to the Red Hat Enterprise Linux 5.8 Technical Notes, linked to in the References, for information on the most significant of these changes. All KVM users should upgrade to these updated packages, which contain backported patches to correct these issues. Note: The procedure in the Solution section must be performed before this update will take effect. last seen 2020-06-01 modified 2020-06-02 plugin id 68466 published 2013-07-12 reporter This script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/68466 title Oracle Linux 5 : kvm (ELSA-2012-0149) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-1440-1.NASL description A flaw was found in the Linux last seen 2020-06-01 modified 2020-06-02 plugin id 59034 published 2012-05-08 reporter Ubuntu Security Notice (C) 2012-2019 Canonical, Inc. / NASL script (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/59034 title Ubuntu 10.04 LTS : linux-lts-backport-natty vulnerabilities (USN-1440-1) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-1426-1.NASL description Sasha Levin discovered a flaw in the permission checking for device assignments requested via the kvm ioctl in the Linux kernel. A local user could use this flaw to crash the system causing a denial of service. (CVE-2011-4347) Stephan Barwolf discovered a flaw in the KVM (kernel-based virtual machine) subsystem of the Linux kernel. A local unprivileged user can crash use this flaw to crash VMs causing a deny of service. (CVE-2012-0045) A flaw was discovered in the Linux kernel last seen 2020-06-01 modified 2020-06-02 plugin id 58871 published 2012-04-25 reporter Ubuntu Security Notice (C) 2012-2019 Canonical, Inc. / NASL script (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/58871 title Ubuntu 10.04 LTS : linux-ec2 vulnerabilities (USN-1426-1) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2012-0149.NASL description Updated kvm packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. KVM is a Linux kernel module built for the standard Red Hat Enterprise Linux kernel. It was found that the kvm_vm_ioctl_assign_device() function in the KVM subsystem of a Linux kernel did not check if the user requesting device assignment was privileged or not. A member of the kvm group on the host could assign unused PCI devices, or even devices that were in use and whose resources were not properly claimed by the respective drivers, which could result in the host crashing. (CVE-2011-4347) Red Hat would like to thank Sasha Levin for reporting this issue. These updated kvm packages include several bug fixes. Space precludes documenting all of these changes in this advisory. Users are directed to the Red Hat Enterprise Linux 5.8 Technical Notes, linked to in the References, for information on the most significant of these changes. All KVM users should upgrade to these updated packages, which contain backported patches to correct these issues. Note: The procedure in the Solution section must be performed before this update will take effect. last seen 2020-04-16 modified 2013-01-24 plugin id 64028 published 2013-01-24 reporter This script is Copyright (C) 2013-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/64028 title RHEL 5 : kvm (RHSA-2012:0149) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-1422-1.NASL description Sasha Levin discovered a flaw in the permission checking for device assignments requested via the kvm ioctl in the Linux kernel. A local user could use this flaw to crash the system causing a denial of service. (CVE-2011-4347) Stephan Barwolf discovered a flaw in the KVM (kernel-based virtual machine) subsystem of the Linux kernel. A local unprivileged user can crash use this flaw to crash VMs causing a deny of service. (CVE-2012-0045) H. Peter Anvin reported a flaw in the Linux kernel that could crash the system. A local user could exploit this flaw to crash the system. (CVE-2012-1097) A flaw was discovered in the Linux kernel last seen 2020-06-01 modified 2020-06-02 plugin id 58742 published 2012-04-13 reporter Ubuntu Security Notice (C) 2012-2019 Canonical, Inc. / NASL script (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/58742 title Ubuntu 11.04 : linux vulnerabilities (USN-1422-1) NASL family Amazon Linux Local Security Checks NASL id ALA_ALAS-2012-55.NASL description A buffer overflow flaw was found in the way the Linux kernel last seen 2020-06-01 modified 2020-06-02 plugin id 69662 published 2013-09-04 reporter This script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/69662 title Amazon Linux AMI : kernel (ALAS-2012-55) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-1389-1.NASL description Paolo Bonzini discovered a flaw in Linux last seen 2020-06-01 modified 2020-06-02 plugin id 58270 published 2012-03-07 reporter Ubuntu Security Notice (C) 2012-2019 Canonical, Inc. / NASL script (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/58270 title Ubuntu 10.04 LTS : linux vulnerabilities (USN-1389-1) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-1405-1.NASL description Paolo Bonzini discovered a flaw in Linux last seen 2020-06-01 modified 2020-06-02 plugin id 58493 published 2012-03-27 reporter Ubuntu Security Notice (C) 2012-2019 Canonical, Inc. / NASL script (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/58493 title Ubuntu 11.10 : linux vulnerabilities (USN-1405-1) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-1409-1.NASL description Somnath Kotur discovered an error in the Linux kernel last seen 2020-06-01 modified 2020-06-02 plugin id 58497 published 2012-03-27 reporter Ubuntu Security Notice (C) 2012-2019 Canonical, Inc. / NASL script (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/58497 title Ubuntu 10.04 LTS : linux-lts-backport-oneiric vulnerabilities (USN-1409-1) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2012-0168.NASL description An updated rhev-hypervisor5 package that fixes several security issues and various bugs is now available. The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The rhev-hypervisor5 package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine (KVM) hypervisor. It includes everything necessary to run and manage virtual machines: A subset of the Red Hat Enterprise Linux operating environment and the Red Hat Enterprise Virtualization Agent. Note: Red Hat Enterprise Virtualization Hypervisor is only available for the Intel 64 and AMD64 architectures with virtualization extensions. A heap overflow flaw was found in the way QEMU-KVM emulated the e1000 network interface card. A privileged guest user in a virtual machine whose network interface is configured to use the e1000 emulated driver could use this flaw to crash the host or, possibly, escalate their privileges on the host. (CVE-2012-0029) A divide-by-zero flaw was found in the Linux kernel last seen 2020-06-01 modified 2020-06-02 plugin id 79283 published 2014-11-17 reporter This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/79283 title RHEL 5 : rhev-hypervisor5 (RHSA-2012:0168) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-1433-1.NASL description A flaw was found in the Linux last seen 2020-06-01 modified 2020-06-02 plugin id 58947 published 2012-05-01 reporter Ubuntu Security Notice (C) 2012-2019 Canonical, Inc. / NASL script (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/58947 title Ubuntu 10.04 LTS : linux-lts-backport-oneiric vulnerabilities (USN-1433-1) NASL family Fedora Local Security Checks NASL id FEDORA_2012-0492.NASL description - Update to Linux 3.1.9 stable release - Fixes CVE-2011-4347, CVE-2011-4622, CVE-2012-0045 - Other assorted other fixes. This should fix suspend/resume bugs that are found in 3.1.5/3.1.6 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-03-17 modified 2012-01-16 plugin id 57549 published 2012-01-16 reporter This script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/57549 title Fedora 15 : kernel-2.6.41.9-1.fc15 (2012-0492) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-1421-1.NASL description Sasha Levin discovered a flaw in the permission checking for device assignments requested via the kvm ioctl in the Linux kernel. A local user could use this flaw to crash the system causing a denial of service. (CVE-2011-4347) Stephan Barwolf discovered a flaw in the KVM (kernel-based virtual machine) subsystem of the Linux kernel. A local unprivileged user can crash use this flaw to crash VMs causing a deny of service. (CVE-2012-0045) H. Peter Anvin reported a flaw in the Linux kernel that could crash the system. A local user could exploit this flaw to crash the system. (CVE-2012-1097) A flaw was discovered in the Linux kernel last seen 2020-06-01 modified 2020-06-02 plugin id 58741 published 2012-04-13 reporter Ubuntu Security Notice (C) 2012-2019 Canonical, Inc. / NASL script (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/58741 title Ubuntu 10.04 LTS : linux-lts-backport-maverick vulnerabilities (USN-1421-1) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-1425-1.NASL description Sasha Levin discovered a flaw in the permission checking for device assignments requested via the kvm ioctl in the Linux kernel. A local user could use this flaw to crash the system causing a denial of service. (CVE-2011-4347) Stephan Barwolf discovered a flaw in the KVM (kernel-based virtual machine) subsystem of the Linux kernel. A local unprivileged user can crash use this flaw to crash VMs causing a deny of service. (CVE-2012-0045) A flaw was discovered in the Linux kernel last seen 2020-06-01 modified 2020-06-02 plugin id 58870 published 2012-04-25 reporter Ubuntu Security Notice (C) 2012-2019 Canonical, Inc. / NASL script (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/58870 title Ubuntu 10.04 LTS : linux vulnerabilities (USN-1425-1) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-1407-1.NASL description This USN was released in error and has been removed. 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. last seen 2020-06-01 modified 2020-06-02 plugin id 58495 published 2012-03-27 reporter Ubuntu Security Notice (C) 2012-2019 Canonical, Inc. / NASL script (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/58495 title Ubuntu 10.10 : linux vulnerabilities (USN-1407-1) NASL family CentOS Local Security Checks NASL id CENTOS_RHSA-2012-0350.NASL description Updated kernel packages that fix various security issues and several bugs are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues : * A buffer overflow flaw was found in the way the Linux kernel last seen 2020-06-01 modified 2020-06-02 plugin id 58275 published 2012-03-08 reporter This script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/58275 title CentOS 6 : kernel (CESA-2012:0350) NASL family Fedora Local Security Checks NASL id FEDORA_2012-0363.NASL description Update to the 3.1.8 stable release. Fixes CVE-2011-4347 as well. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-03-17 modified 2012-01-16 plugin id 57547 published 2012-01-16 reporter This script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/57547 title Fedora 16 : kernel-3.1.8-2.fc16 (2012-0363) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2012-0350.NASL description Updated kernel packages that fix various security issues and several bugs are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues : * A buffer overflow flaw was found in the way the Linux kernel last seen 2020-04-16 modified 2012-03-07 plugin id 58261 published 2012-03-07 reporter This script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/58261 title RHEL 6 : kernel (RHSA-2012:0350) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2012-0422.NASL description An updated rhev-hypervisor6 package that fixes two security issues and one bug is now available. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The rhev-hypervisor6 package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine (KVM) hypervisor. It includes everything necessary to run and manage virtual machines: A subset of the Red Hat Enterprise Linux operating environment and the Red Hat Enterprise Virtualization Agent. Note: Red Hat Enterprise Virtualization Hypervisor is only available for the Intel 64 and AMD64 architectures with virtualization extensions. A flaw was found in the way the Linux kernel last seen 2020-06-01 modified 2020-06-02 plugin id 79285 published 2014-11-17 reporter This script is Copyright (C) 2014-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/79285 title RHEL 6 : rhev-hypervisor6 (RHSA-2012:0422) NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2012-0350.NASL description From Red Hat Security Advisory 2012:0350 : Updated kernel packages that fix various security issues and several bugs are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues : * A buffer overflow flaw was found in the way the Linux kernel last seen 2020-06-01 modified 2020-06-02 plugin id 68491 published 2013-07-12 reporter This script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/68491 title Oracle Linux 6 : kernel (ELSA-2012-0350) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-1431-1.NASL description A flaw was found in the Linux last seen 2020-06-01 modified 2020-06-02 plugin id 58946 published 2012-05-01 reporter Ubuntu Security Notice (C) 2012-2019 Canonical, Inc. / NASL script (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/58946 title Ubuntu 11.10 : linux vulnerabilities (USN-1431-1) NASL family Scientific Linux Local Security Checks NASL id SL_20120306_KERNEL_ON_SL6_X.NASL description The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues : - A buffer overflow flaw was found in the way the Linux kernel last seen 2020-03-18 modified 2012-08-01 plugin id 61277 published 2012-08-01 reporter This script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/61277 title Scientific Linux Security Update : kernel on SL6.x i386/x86_64 (20120306) NASL family Scientific Linux Local Security Checks NASL id SL_20120221_KVM_ON_SL5_X.NASL description KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on AMD64 and Intel 64 systems. KVM is a Linux kernel module built for the standard Scientific Linux kernel. It was found that the kvm_vm_ioctl_assign_device() function in the KVM subsystem of a Linux kernel did not check if the user requesting device assignment was privileged or not. A member of the kvm group on the host could assign unused PCI devices, or even devices that were in use and whose resources were not properly claimed by the respective drivers, which could result in the host crashing. (CVE-2011-4347) All KVM users should upgrade to these updated packages, which contain backported patches to correct these issues. last seen 2020-03-18 modified 2012-08-01 plugin id 61267 published 2012-08-01 reporter This script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/61267 title Scientific Linux Security Update : kvm on SL5.x x86_64 (20120221) NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-1406-1.NASL description This USN was released in error and has been removed. 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. last seen 2020-06-01 modified 2020-06-02 plugin id 58494 published 2012-03-27 reporter Ubuntu Security Notice (C) 2012-2019 Canonical, Inc. / NASL script (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/58494 title Ubuntu 11.04 : linux vulnerabilities (USN-1406-1) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-2443.NASL description Several vulnerabilities have been discovered in the Linux kernel that may lead to a denial of service or privilege escalation. The Common Vulnerabilities and Exposures project identifies the following problems : - CVE-2009-4307 Nageswara R Sastry reported an issue in the ext4 filesystem. Local users with the privileges to mount a filesystem can cause a denial of service (BUG) by providing a s_log_groups_per_flex value greater than 31. - CVE-2011-1833 Vasiliy Kulikov of Openwall and Dan Rosenberg discovered an information leak in the eCryptfs filesystem. Local users were able to mount arbitrary directories. - CVE-2011-4347 Sasha Levin reported an issue in the device assignment functionality in KVM. Local users with permission to access /dev/kvm could assign unused pci devices to a guest and cause a denial of service (crash). - CVE-2012-0045 Stephan Barwolf reported an issue in KVM. Local users in a 32-bit guest running on a 64-bit system can crash the guest with a syscall instruction. - CVE-2012-1090 CAI Qian reported an issue in the CIFS filesystem. A reference count leak can occur during the lookup of special files, resulting in a denial of service (oops) on umount. - CVE-2012-1097 H. Peter Anvin reported an issue in the regset infrastructure. Local users can cause a denial of service (NULL pointer dereference) by triggering the write methods of readonly regsets. last seen 2020-03-17 modified 2012-03-27 plugin id 58486 published 2012-03-27 reporter This script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/58486 title Debian DSA-2443-1 : linux-2.6 - privilege escalation/denial of service NASL family Oracle Linux Local Security Checks NASL id ORACLELINUX_ELSA-2012-2003.NASL description Description of changes: * CVE-2012-0207: Denial of service bug in IGMP. The IGMP subsystem last seen 2020-06-01 modified 2020-06-02 plugin id 68669 published 2013-07-12 reporter This script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/68669 title Oracle Linux 5 / 6 : Unbreakable Enterprise kernel (ELSA-2012-2003) NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2012-1042.NASL description Updated kernel packages that fix various security issues and three bugs are now available for Red Hat Enterprise Linux 6.1 Extended Update Support. The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues : * A local, unprivileged user could use an integer overflow flaw in drm_mode_dirtyfb_ioctl() to cause a denial of service or escalate their privileges. (CVE-2012-0044, Important) * It was found that the kvm_vm_ioctl_assign_device() function in the KVM (Kernel-based Virtual Machine) subsystem of a Linux kernel did not check if the user requesting device assignment was privileged or not. A local, unprivileged user on the host could assign unused PCI devices, or even devices that were in use and whose resources were not properly claimed by the respective drivers, which could result in the host crashing. (CVE-2011-4347, Moderate) * A flaw was found in the way the Linux kernel last seen 2020-06-01 modified 2020-06-02 plugin id 64044 published 2013-01-24 reporter This script is Copyright (C) 2013-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/64044 title RHEL 6 : kernel (RHSA-2012:1042)
Redhat
advisories |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
rpms |
|