Impact: Moderate Public Date: 2019-01-11 CWE: CWE-200 Bugzilla: 1663176: CVE-2019-3459 kernel: Heap address information leak while using L2CAP_GET_CONF_OPT A flaw was found in the Linux kernels implementation of Logical link control and adaptation protocol (L2CAP), part of the Bluetooth stack. An attacker with physical access within the range of standard Bluetooth transmission can create a specially crafted packet. The response to this specially crafted packet can contain part of the kernel stack which can be used in a further attack.
Find out more about CVE-2019-3459 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 5.3 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | Low |
| Integrity Impact | None |
| Availability Impact | None |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise MRG 2 | kernel-rt | Affected |
| Red Hat Enterprise Linux 7 | kernel-alt | Affected |
| Red Hat Enterprise Linux 7 | kernel | Affected |
| Red Hat Enterprise Linux 7 | kernel-rt | Affected |
| Red Hat Enterprise Linux 6 | kernel | Affected |
| Red Hat Enterprise Linux 5 | kernel | Affected |
- Disabling the bluetooth hardware in the bios.
- Prevent loading of the bluetooth kernel modules.
- Disable the bluetooth connection by putting the system in "airport" mode.
Upstream patch:
https://lore.kernel.org/linux-bluetooth/20190110062833.GA15047@kroah.com/
Oss-security post:
https://seclists.org/oss-sec/2019/q1/58
Vulmon