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CVE-2017-7184

Status Candidate

Overview

The xfrm_replay_verify_len function in net/xfrm/xfrm_user.c in the Linux kernel through 4.10.6 does not validate certain size data after an XFRM_MSG_NEWAE update, which allows local users to obtain root privileges or cause a denial of service (heap-based out-of-bounds access) by leveraging the CAP_NET_ADMIN capability, as demonstrated during a Pwn2Own competition at CanSecWest 2017 for the Ubuntu 16.10 linux-image-* package 4.8.0.41.52.

Related Files

Red Hat Security Advisory 2017-2931-01
Posted Oct 19, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2931-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix: Out-of-bounds kernel heap access vulnerability was found in xfrm, kernel's IP framework for transforming packets. An error dealing with netlink messages from an unprivileged user leads to arbitrary read/write and privilege escalation. A race condition issue leading to a use-after-free flaw was found in the way the raw packet sockets are implemented in the Linux kernel networking subsystem handling synchronization. A local user able to open a raw packet socket could use this flaw to elevate their privileges on the system.

tags | advisory, arbitrary, kernel, local
systems | linux, redhat
advisories | CVE-2016-8399, CVE-2017-1000111, CVE-2017-1000112, CVE-2017-11176, CVE-2017-14106, CVE-2017-7184, CVE-2017-7541, CVE-2017-7542, CVE-2017-7558
MD5 | c1dbd6840e2e16c4205c17a6e62ec9fa
Red Hat Security Advisory 2017-2930-01
Posted Oct 19, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2930-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix: Out-of-bounds kernel heap access vulnerability was found in xfrm, kernel's IP framework for transforming packets. An error dealing with netlink messages from an unprivileged user leads to arbitrary read/write and privilege escalation. A race condition issue leading to a use-after-free flaw was found in the way the raw packet sockets are implemented in the Linux kernel networking subsystem handling synchronization. A local user able to open a raw packet socket could use this flaw to elevate their privileges on the system.

tags | advisory, arbitrary, kernel, local
systems | linux, redhat
advisories | CVE-2016-8399, CVE-2017-1000111, CVE-2017-1000112, CVE-2017-11176, CVE-2017-14106, CVE-2017-7184, CVE-2017-7541, CVE-2017-7542, CVE-2017-7558
MD5 | bde81e8df0854f9e0da92d2d031727b7
Red Hat Security Advisory 2017-2918-01
Posted Oct 19, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-2918-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fix: Out-of-bounds kernel heap access vulnerability was found in xfrm, kernel's IP framework for transforming packets. An error dealing with netlink messages from an unprivileged user leads to arbitrary read/write and privilege escalation. A race condition issue leading to a use-after-free flaw was found in the way the raw packet sockets are implemented in the Linux kernel networking subsystem handling synchronization. A local user able to open a raw packet socket could use this flaw to elevate their privileges on the system.

tags | advisory, arbitrary, kernel, local
systems | linux, redhat
advisories | CVE-2017-1000111, CVE-2017-1000112, CVE-2017-11176, CVE-2017-14106, CVE-2017-14340, CVE-2017-7184, CVE-2017-7541, CVE-2017-7542, CVE-2017-7558
MD5 | 8518b2d326398c1a3d949f4ea8241046
Ubuntu Security Notice USN-3251-2
Posted Mar 30, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3251-2 - USN-3251-1 fixed a vulnerability in the Linux kernel for Ubuntu 16.10. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 16.10 for Ubuntu 16.04 LTS. It was discovered that the xfrm framework for transforming packets in the Linux kernel did not properly validate data received from user space. A local attacker could use this to cause a denial of service or execute arbitrary code with administrative privileges. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-7184
MD5 | d2f57dbf39e6f9068665426b0f9cc880
Ubuntu Security Notice USN-3251-1
Posted Mar 30, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3251-1 - It was discovered that the xfrm framework for transforming packets in the Linux kernel did not properly validate data received from user space. A local attacker could use this to cause a denial of service or execute arbitrary code with administrative privileges.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-7184
MD5 | 3a9c7289ffc228fde7d16fcf70ff8929
Ubuntu Security Notice USN-3250-1
Posted Mar 30, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3250-1 - It was discovered that the xfrm framework for transforming packets in the Linux kernel did not properly validate data received from user space. A local attacker could use this to cause a denial of service or execute arbitrary code with administrative privileges.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-7184
MD5 | 43a1b2cd1fe7d604c361bd87d0271815
Ubuntu Security Notice USN-3250-2
Posted Mar 30, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3250-2 - USN-3250-1 fixed a vulnerability in the Linux kernel for Ubuntu 14.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 14.04 LTS for Ubuntu 12.04 LTS. It was discovered that the xfrm framework for transforming packets in the Linux kernel did not properly validate data received from user space. A local attacker could use this to cause a denial of service or execute arbitrary code with administrative privileges. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-7184
MD5 | 5657c785b324e9563c6a8fb394214b5a
Ubuntu Security Notice USN-3249-2
Posted Mar 30, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3249-2 - USN-3249-1 fixed a vulnerability in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. It was discovered that the xfrm framework for transforming packets in the Linux kernel did not properly validate data received from user space. A local attacker could use this to cause a denial of service or execute arbitrary code with administrative privileges. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-7184
MD5 | 4bc57c0944248dba7d3742cd39d01992
Ubuntu Security Notice USN-3248-1
Posted Mar 30, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3248-1 - It was discovered that the xfrm framework for transforming packets in the Linux kernel did not properly validate data received from user space. A local attacker could use this to cause a denial of service or execute arbitrary code with administrative privileges.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-7184
MD5 | d427d51bb7dc8fbcd75e3da231f98728
Ubuntu Security Notice USN-3249-1
Posted Mar 30, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3249-1 - It was discovered that the xfrm framework for transforming packets in the Linux kernel did not properly validate data received from user space. A local attacker could use this to cause a denial of service or execute arbitrary code with administrative privileges.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-7184
MD5 | f14827acb72b4543c24f697a5b51e629
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