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CVE-2014-9715

Status Candidate

Overview

include/net/netfilter/nf_conntrack_extend.h in the netfilter subsystem in the Linux kernel before 3.14.5 uses an insufficiently large data type for certain extension data, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via outbound network traffic that triggers extension loading, as demonstrated by configuring a PPTP tunnel in a NAT environment.

Related Files

Red Hat Security Advisory 2015-1564-01
Posted Aug 6, 2015
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2015-1564-01 - The kernel-rt packages contain the Linux kernel, the core of any Linux operating system. An integer overflow flaw was found in the way the Linux kernel's netfilter connection tracking implementation loaded extensions. An attacker on a local network could potentially send a sequence of specially crafted packets that would initiate the loading of a large number of extensions, causing the targeted system in that network to crash. It was found that the Linux kernel's ping socket implementation did not properly handle socket unhashing during spurious disconnects, which could lead to a use-after-free flaw. On x86-64 architecture systems, a local user able to create ping sockets could use this flaw to crash the system. On non-x86-64 architecture systems, a local user able to create ping sockets could use this flaw to escalate their privileges on the system.

tags | advisory, overflow, x86, kernel, local
systems | linux, redhat
advisories | CVE-2014-9715, CVE-2015-2922, CVE-2015-3636
MD5 | ea43247306503e22b480a9de2aef3245
Red Hat Security Advisory 2015-1565-01
Posted Aug 6, 2015
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2015-1565-01 - The kernel-rt packages contain the Linux kernel, the core of any Linux operating system. An integer overflow flaw was found in the way the Linux kernel's netfilter connection tracking implementation loaded extensions. An attacker on a local network could potentially send a sequence of specially crafted packets that would initiate the loading of a large number of extensions, causing the targeted system in that network to crash. A stack-based buffer overflow flaw was found in the Linux kernel's early load microcode functionality. On a system with UEFI Secure Boot enabled, a local, privileged user could use this flaw to increase their privileges to the kernel level, bypassing intended restrictions in place.

tags | advisory, overflow, kernel, local
systems | linux, redhat
advisories | CVE-2014-9715, CVE-2015-2666, CVE-2015-2922, CVE-2015-3636
MD5 | a1d985b15707a20a9552d08c49cb6bdc
Red Hat Security Advisory 2015-1534-01
Posted Aug 6, 2015
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2015-1534-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. An integer overflow flaw was found in the way the Linux kernel's netfilter connection tracking implementation loaded extensions. An attacker on a local network could potentially send a sequence of specially crafted packets that would initiate the loading of a large number of extensions, causing the targeted system in that network to crash. A stack-based buffer overflow flaw was found in the Linux kernel's early load microcode functionality. On a system with UEFI Secure Boot enabled, a local, privileged user could use this flaw to increase their privileges to the kernel level, bypassing intended restrictions in place.

tags | advisory, overflow, kernel, local
systems | linux, redhat
advisories | CVE-2014-9715, CVE-2015-2666, CVE-2015-2922, CVE-2015-3636
MD5 | 7194f0fde43095d169b0958cfaf2adb8
Ubuntu Security Notice USN-2611-1
Posted May 20, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2611-1 - Vincent Tondellier discovered an integer overflow in the Linux kernel's netfilter connection tracking accounting of loaded extensions. An attacker on the local area network (LAN) could potential exploit this flaw to cause a denial of service (system crash of targeted system).

tags | advisory, denial of service, overflow, kernel, local
systems | linux, ubuntu
advisories | CVE-2014-9715
MD5 | d55a1c6c6ecb1604d9adea96d885daf5
Ubuntu Security Notice USN-2612-1
Posted May 20, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2612-1 - A race condition between chown() and execve() was discovered in the Linux kernel. A local attacker could exploit this race by using chown on a setuid-user-binary to gain administrative privileges. Vincent Tondellier discovered an integer overflow in the Linux kernel's netfilter connection tracking accounting of loaded extensions. An attacker on the local area network (LAN) could potential exploit this flaw to cause a denial of service (system crash of targeted system). Various other issues were also addressed.

tags | advisory, denial of service, overflow, kernel, local
systems | linux, ubuntu
advisories | CVE-2014-9715, CVE-2015-3339
MD5 | fc5b2826cb9b9b22c6487e3ccc0cf1a3
Ubuntu Security Notice USN-2613-1
Posted May 20, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2613-1 - Vincent Tondellier discovered an integer overflow in the Linux kernel's netfilter connection tracking accounting of loaded extensions. An attacker on the local area network (LAN) could potential exploit this flaw to cause a denial of service (system crash of targeted system). Jan Beulich discovered the Xen virtual machine subsystem of the Linux kernel did not properly restrict access to PCI command registers. A local guest user could exploit this flaw to cause a denial of service (host crash). Various other issues were also addressed.

tags | advisory, denial of service, overflow, kernel, local
systems | linux, ubuntu
advisories | CVE-2014-9715, CVE-2015-2150, CVE-2015-2830, CVE-2015-3331
MD5 | 214b40cc8343400a3681fa170a4f9165
Ubuntu Security Notice USN-2614-1
Posted May 20, 2015
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 2614-1 - Vincent Tondellier discovered an integer overflow in the Linux kernel's netfilter connection tracking accounting of loaded extensions. An attacker on the local area network (LAN) could potential exploit this flaw to cause a denial of service (system crash of targeted system). Jan Beulich discovered the Xen virtual machine subsystem of the Linux kernel did not properly restrict access to PCI command registers. A local guest user could exploit this flaw to cause a denial of service (host crash). Various other issues were also addressed.

tags | advisory, denial of service, overflow, kernel, local
systems | linux, ubuntu
advisories | CVE-2014-9715, CVE-2015-2150, CVE-2015-2830, CVE-2015-3331
MD5 | 75247bc7dffeb9b3b500a0b34f89d634
Debian Security Advisory 3237-1
Posted Apr 27, 2015
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3237-1 - Several vulnerabilities have been discovered in the Linux kernel that may lead to a privilege escalation, denial of service or information leaks.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, debian
advisories | CVE-2014-8159, CVE-2014-9715, CVE-2015-2041, CVE-2015-2042, CVE-2015-2150, CVE-2015-2830, CVE-2015-2922, CVE-2015-3331, CVE-2015-3332, CVE-2015-3339
MD5 | 3353c955b704e481b75f84524768c42c
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