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CVE-2017-1000410

Status Candidate

Overview

The Linux kernel version 3.3-rc1 and later is affected by a vulnerability lies in the processing of incoming L2CAP commands - ConfigRequest, and ConfigResponse messages. This info leak is a result of uninitialized stack variables that may be returned to an attacker in their uninitialized state. By manipulating the code flows that precede the handling of these configuration messages, an attacker can also gain some control over which data will be held in the uninitialized stack variables. This can allow him to bypass KASLR, and stack canaries protection - as both pointers and stack canaries may be leaked in this manner. Combining this vulnerability (for example) with the previously disclosed RCE vulnerability in L2CAP configuration parsing (CVE-2017-1000251) may allow an attacker to exploit the RCE against kernels which were built with the above mitigations. These are the specifics of this vulnerability: In the function l2cap_parse_conf_rsp and in the function l2cap_parse_conf_req the following variable is declared without initialization: struct l2cap_conf_efs efs; In addition, when parsing input configuration parameters in both of these functions, the switch case for handling EFS elements may skip the memcpy call that will write to the efs variable: ... case L2CAP_CONF_EFS: if (olen == sizeof(efs)) memcpy(&efs, (void *)val, olen); ... The olen in the above if is attacker controlled, and regardless of that if, in both of these functions the efs variable would eventually be added to the outgoing configuration request that is being built: l2cap_add_conf_opt(&ptr, L2CAP_CONF_EFS, sizeof(efs), (unsigned long) &efs); So by sending a configuration request, or response, that contains an L2CAP_CONF_EFS element, but with an element length that is not sizeof(efs) - the memcpy to the uninitialized efs variable can be avoided, and the uninitialized variable would be returned to the attacker (16 bytes).

Related Files

Ubuntu Security Notice USN-3933-2
Posted Apr 3, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3933-2 - USN-3933-1 fixed vulnerabilities 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. It was discovered that an information leak vulnerability existed in the Bluetooth implementation of the Linux kernel. An attacker within Bluetooth range could possibly expose sensitive information. Various other issues were also addressed.

tags | advisory, kernel, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-1000410, CVE-2017-18360, CVE-2018-19824, CVE-2019-3460, CVE-2019-6974, CVE-2019-7222, CVE-2019-9213
MD5 | b78fefb193ca299bd8798a3f0e9cfc39
Ubuntu Security Notice USN-3933-1
Posted Apr 3, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3933-1 - It was discovered that an information leak vulnerability existed in the Bluetooth implementation of the Linux kernel. An attacker within Bluetooth range could possibly expose sensitive information. It was discovered that the USB serial device driver in the Linux kernel did not properly validate baud rate settings when debugging is enabled. A local attacker could use this to cause a denial of service. Various other issues were also addressed.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2017-1000410, CVE-2017-18360, CVE-2018-19824, CVE-2019-3460, CVE-2019-6974, CVE-2019-7222, CVE-2019-9213
MD5 | c6a1e9ef0ee7cd623c284d5d2c87b9a1
Red Hat Security Advisory 2018-1319-01
Posted May 8, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-1319-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. Issues addressed include denial of service and use-after-free vulnerabilities.

tags | advisory, denial of service, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2017-1000410, CVE-2017-13166, CVE-2017-18017, CVE-2017-7645, CVE-2017-8824, CVE-2018-8897
MD5 | 42ccdba2244f2e29052f626231d0a846
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
MD5 | 7b02f5bfa1da938b42ff2a68dff05bd1
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
MD5 | 4edffb5a052fe2901cccfe63aaa4b587
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
MD5 | 6603183d966425b80f2cb500418638f5
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
MD5 | 7e41c6a077e7ee63c7f9eaed29c09a21
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
MD5 | 82b374fa56da7125a045baa707e307b1
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
MD5 | b88b402831cc589e93712fbeed229e93
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