Bug 1663179 (CVE-2019-3460) - CVE-2019-3460 kernel: Heap address information leak while using L2CAP_PARSE_CONF_RSP
Summary: CVE-2019-3460 kernel: Heap address information leak while using L2CAP_PARSE_C...
Status: NEW
Alias: CVE-2019-3460
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=moderate,public=20190111,repor...
Keywords: Security
Depends On: 1664555 1664557 1664904 1700507 1700510 1664902 1664903 1664905 1664906 1665925 1700506 1700509
Blocks: 1663182
TreeView+ depends on / blocked
 
Reported: 2019-01-03 11:28 UTC by Andrej Nemec
Modified: 2019-06-08 23:47 UTC (History)
50 users (show)

(edit)
A flaw was found in the Linux kernel's implementation of logical link control and adaptation protocol (L2CAP), part of the Bluetooth stack in the l2cap_parse_conf_rsp and l2cap_parse_conf_req functions. 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.
Clone Of:
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Last Closed:


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Description Andrej Nemec 2019-01-03 11:28:24 UTC
A flaw was found in the Linux kernels implementation of Logical link control and adaptation protocol (L2CAP), part of the bluetooth stack in the  l2cap_parse_conf_rsp, l2cap_parse_conf_req functions.

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.

Upstream patch:
https://lore.kernel.org/linux-bluetooth/20190110062833.GA15047@kroah.com/

Oss-security post:
https://seclists.org/oss-sec/2019/q1/58

Mitigation:

- 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.

Comment 6 Andrej Nemec 2019-01-14 13:05:06 UTC
Public via:

https://seclists.org/oss-sec/2019/q1/58

Comment 7 Andrej Nemec 2019-01-14 13:05:36 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1665925]


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