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CVE-2017-17449

Status Candidate

Overview

The __netlink_deliver_tap_skb function in net/netlink/af_netlink.c in the Linux kernel through 4.14.4, when CONFIG_NLMON is enabled, does not restrict observations of Netlink messages to a single net namespace, which allows local users to obtain sensitive information by leveraging the CAP_NET_ADMIN capability to sniff an nlmon interface for all Netlink activity on the system.

Related Files

Ubuntu Security Notice USN-3655-2
Posted May 23, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3655-2 - USN-3655-1 fixed vulnerabilities and added mitigations 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 ESM. Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a sidechannel attack. This flaw is known as Spectre Variant 4. A local attacker could use this to expose sensitive information, including kernel memory. Various other issues were also addressed.

tags | advisory, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-12134, CVE-2017-13220, CVE-2017-13305, CVE-2017-17449, CVE-2017-18079, CVE-2017-18203, CVE-2017-18204, CVE-2017-18208, CVE-2017-18221, CVE-2018-3639, CVE-2018-8822
SHA-256 | d20de8a8b1a91c1868f659ceb93e500b05dcd66acdac31b9a1b5e284acd625b6
Ubuntu Security Notice USN-3655-1
Posted May 23, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3655-1 - Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a sidechannel attack. This flaw is known as Spectre Variant 4. A local attacker could use this to expose sensitive information, including kernel memory. Jan H. Schonherr discovered that the Xen subsystem did not properly handle block IO merges correctly in some situations. An attacker in a guest vm could use this to cause a denial of service or possibly gain administrative privileges in the host. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-12134, CVE-2017-13220, CVE-2017-13305, CVE-2017-17449, CVE-2017-18079, CVE-2017-18203, CVE-2017-18204, CVE-2017-18208, CVE-2017-18221, CVE-2018-3639, CVE-2018-8822
SHA-256 | b4540785a10c68708436fa71415c979852b1d924f18c7bfa316d742b5563b642
Ubuntu Security Notice USN-3653-2
Posted May 23, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3653-2 - USN-3653-1 fixed vulnerabilities and added mitigations in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS. Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a sidechannel attack. This flaw is known as Spectre Variant 4. A local attacker could use this to expose sensitive information, including kernel memory. Various other issues were also addressed.

tags | advisory, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-17449, CVE-2017-17975, CVE-2017-18203, CVE-2017-18208, CVE-2018-3639, CVE-2018-8822
SHA-256 | 24369ce639746b8afd34db0ce7bb0af4184336f65b3521bb65d2e20967beb378
Ubuntu Security Notice USN-3657-1
Posted May 23, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3657-1 - It was discovered that the netlink subsystem in the Linux kernel did not properly restrict observations of netlink messages to the appropriate net namespace. A local attacker could use this to expose sensitive information. Tuba Yavuz discovered that a double-free error existed in the USBTV007 driver of the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-17449, CVE-2017-17975, CVE-2017-18203, CVE-2017-18208, CVE-2018-8822
SHA-256 | ad6897168d9be2ebb02e98e78731eec9cd871a9b290d238a53272249a21e6d15
Ubuntu Security Notice USN-3653-1
Posted May 21, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3653-1 - Jann Horn and Ken Johnson discovered that microprocessors utilizing speculative execution of a memory read may allow unauthorized memory reads via a sidechannel attack. This flaw is known as Spectre Variant 4. A local attacker could use this to expose sensitive information, including kernel memory. It was discovered that the netlink subsystem in the Linux kernel did not properly restrict observations of netlink messages to the appropriate net namespace. A local attacker could use this to expose sensitive information. Various other issues were also addressed.

tags | advisory, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-17449, CVE-2017-17975, CVE-2017-18203, CVE-2017-18208, CVE-2018-3639, CVE-2018-8822
SHA-256 | d9fc900e1f4d55c8f25f80332560895a636a3d420324f107816b8351e17b5486
Red Hat Security Advisory 2018-1130-01
Posted Apr 18, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-1130-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include a use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2017-1000252, CVE-2017-1000410, CVE-2017-13166, CVE-2017-15265, CVE-2017-17449, CVE-2017-18017, CVE-2017-8824, CVE-2017-9725
SHA-256 | 80cf5578da963f9e90cfb1fcfa47601793dee42a13f2199c2740a9d499d01fac
Red Hat Security Advisory 2018-1170-01
Posted Apr 18, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-1170-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include a use-after-free vulnerability.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2017-1000410, CVE-2017-13166, CVE-2017-15265, CVE-2017-17449, CVE-2017-18017, CVE-2017-8824, CVE-2017-9725
SHA-256 | dc3a920fd3b2fe15dce55b1931b484c961cdd88961bd63050d3b696972886b80
Red Hat Security Advisory 2018-1062-01
Posted Apr 11, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-1062-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include buffer overflow, bypass, denial of service, randomization, and use-after-free vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2016-3672, CVE-2016-7913, CVE-2016-8633, CVE-2017-1000252, CVE-2017-1000407, CVE-2017-1000410, CVE-2017-12154, CVE-2017-12190, CVE-2017-13166, CVE-2017-14140, CVE-2017-15116, CVE-2017-15121, CVE-2017-15126, CVE-2017-15127, CVE-2017-15129, CVE-2017-15265, CVE-2017-17448, CVE-2017-17449, CVE-2017-17558, CVE-2017-18017, CVE-2017-18203, CVE-2017-7294, CVE-2017-8824, CVE-2017-9725, CVE-2018-1000004, CVE-2018-5750
SHA-256 | fbeade70a9a2b1fd9926eaf605a9a3afcda14c9b6e58abd7aae2926d31ecbaa9
Red Hat Security Advisory 2018-0676-01
Posted Apr 11, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-0676-01 - The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Issues addressed include buffer overflow, bypass, denial of service, and use-after-free vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2016-3672, CVE-2016-7913, CVE-2016-8633, CVE-2017-1000252, CVE-2017-1000407, CVE-2017-1000410, CVE-2017-12154, CVE-2017-12190, CVE-2017-13166, CVE-2017-14140, CVE-2017-15116, CVE-2017-15121, CVE-2017-15126, CVE-2017-15127, CVE-2017-15129, CVE-2017-15265, CVE-2017-17053, CVE-2017-17448, CVE-2017-17449, CVE-2017-17558, CVE-2017-18017, CVE-2017-18203, CVE-2017-7294, CVE-2017-8824, CVE-2017-9725, CVE-2018-1000004
SHA-256 | 760529e5784a4c45d323b6b90d60c38cfaa4a399d95492fd1f96c65cfeea827b
Red Hat Security Advisory 2018-0654-01
Posted Apr 11, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-0654-01 - The kernel-alt packages provide the Linux kernel version 4.x. The following packages have been upgraded to a later upstream version: kernel-alt. Issues addressed include buffer overflow, bypass, and denial of service vulnerabilities.

tags | advisory, denial of service, overflow, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2017-1000255, CVE-2017-1000410, CVE-2017-11473, CVE-2017-12190, CVE-2017-15129, CVE-2017-15299, CVE-2017-17448, CVE-2017-17449, CVE-2018-1000004, CVE-2018-6927
SHA-256 | 46213a5d7256ccc486e09644da5d4a3741fa2506819b7e2725344f3ca8bb31cb
Ubuntu Security Notice USN-3619-2
Posted Apr 6, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3619-2 - USN-3619-1 fixed vulnerabilities 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. Jann Horn discovered that the Berkeley Packet Filter implementation in the Linux kernel improperly performed sign extension in some situations. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-0861, CVE-2017-1000407, CVE-2017-11472, CVE-2017-15129, CVE-2017-16528, CVE-2017-16532, CVE-2017-16536, CVE-2017-16537, CVE-2017-16645, CVE-2017-16646, CVE-2017-16649, CVE-2017-16650, CVE-2017-16911, CVE-2017-16912, CVE-2017-16913, CVE-2017-16914, CVE-2017-16994, CVE-2017-16995, CVE-2017-17448, CVE-2017-17449, CVE-2017-17450, CVE-2017-17558, CVE-2017-17741, CVE-2017-17805, CVE-2017-17806, CVE-2017-17807
SHA-256 | 38b18f0521488f7e9524a5f8e492f7ad41f5c91d876a8aea56b6215d3c63309b
Ubuntu Security Notice USN-3619-1
Posted Apr 4, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3619-1 - Jann Horn discovered that the Berkeley Packet Filter implementation in the Linux kernel improperly performed sign extension in some situations. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that a race condition leading to a use-after-free vulnerability existed in the ALSA PCM subsystem of the Linux kernel. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-0861, CVE-2017-1000407, CVE-2017-11472, CVE-2017-15129, CVE-2017-16528, CVE-2017-16532, CVE-2017-16536, CVE-2017-16537, CVE-2017-16645, CVE-2017-16646, CVE-2017-16649, CVE-2017-16650, CVE-2017-16911, CVE-2017-16912, CVE-2017-16913, CVE-2017-16914, CVE-2017-16994, CVE-2017-16995, CVE-2017-17448, CVE-2017-17449, CVE-2017-17450, CVE-2017-17558, CVE-2017-17741, CVE-2017-17805, CVE-2017-17806, CVE-2017-17807
SHA-256 | c6a6f41fea45fbea18a8b7d6e773995876e32e44e04595bd392e7b20c000dc48
Debian Security Advisory 4082-1
Posted Jan 10, 2018
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4082-1 - 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-2017-1000407, CVE-2017-1000410, CVE-2017-15868, CVE-2017-16538, CVE-2017-16939, CVE-2017-17448, CVE-2017-17449, CVE-2017-17450, CVE-2017-17558, CVE-2017-17741, CVE-2017-17805, CVE-2017-17806, CVE-2017-17807, CVE-2017-5754, CVE-2017-8824
SHA-256 | 347c611935bac535fc1ce2315b4501495b8f7bd67bd16039884f09a909a4602d
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