CVE-2019-3460: Infoleak
First published: Thu Jan 03 2019(Updated: )
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.
Credit: security@debian.org security@debian.org security@debian.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:3.10.0-1062.rt56.1022.el7 | 0:3.10.0-1062.rt56.1022.el7 |
| redhat/kernel | <0:3.10.0-1062.el7 | 0:3.10.0-1062.el7 |
| redhat/kernel-alt | <0:4.14.0-115.18.1.el7a | 0:4.14.0-115.18.1.el7a |
| redhat/kernel-rt | <0:4.18.0-147.rt24.93.el8 | 0:4.18.0-147.rt24.93.el8 |
| redhat/kernel | <0:4.18.0-147.el8 | 0:4.18.0-147.el8 |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.123-1 6.1.128-1 6.12.12-1 6.12.16-1 | |
| Linux kernel | <=5.1 | |
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =16.04 | |
| Ubuntu Linux | =18.04 | |
| Ubuntu Linux | =18.10 | |
| Debian | =8.0 | |
| Red Hat CodeReady Linux Builder | =8.0 | |
| Red Hat Virtualization Host EUS | =4.0 | |
| Red Hat Enterprise Linux | =8.0 | |
| Red Hat Enterprise Linux Desktop | =7.0 | |
| Red Hat Enterprise Linux Server EUS | =8.1 | |
| Red Hat Enterprise Linux Server EUS | =8.2 | |
| Red Hat Enterprise Linux Server EUS | =8.4 | |
| Red Hat Enterprise Linux for Real Time | =7 | |
| Red Hat Enterprise Linux for Real Time | =8 | |
| Red Hat Enterprise Linux for Real Time for NFV | =7 | |
| Red Hat Enterprise Linux for Real Time for NFV | =8 | |
| Red Hat Enterprise Linux for Real Time for NFV | =8.2 | |
| Red Hat Enterprise Linux for Real Time for NFV | =8.4 | |
| Red Hat Enterprise Linux for Real Time | =8.2 | |
| Red Hat Enterprise Linux for Real Time | =8.4 | |
| Red Hat Enterprise Linux Server | =7.0 | |
| Red Hat Enterprise Linux Server | =8.2 | |
| Red Hat Enterprise Linux Server | =8.4 | |
| Red Hat Enterprise Linux Server | =8.2 | |
| Red Hat Enterprise Linux Server | =8.4 | |
| Red Hat Enterprise Linux Workstation | =7.0 |
Remedy
- 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.
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2019-3460 https://nvd.nist.gov/vuln/detail/CVE-2019-3460
- https://bugzilla.redhat.com/show_bug.cgi?id=1663179
- https://access.redhat.com/errata/RHSA-2019:2043
- https://access.redhat.com/errata/RHSA-2019:2029
- https://access.redhat.com/errata/RHSA-2020:0740
- https://access.redhat.com/errata/RHSA-2019:3309
- https://access.redhat.com/errata/RHSA-2019:3517
- https://access.redhat.com/security/cve/cve-2019-3460
- http://www.openwall.com/lists/oss-security/2019/06/27/2
- http://www.openwall.com/lists/oss-security/2019/06/27/7
- http://www.openwall.com/lists/oss-security/2019/06/28/1
- http://www.openwall.com/lists/oss-security/2019/06/28/2
- http://www.openwall.com/lists/oss-security/2019/08/12/1
- https://git.kernel.org/linus/af3d5d1c87664a4f150fcf3534c6567cb19909b0
- https://lists.debian.org/debian-lts-announce/2019/05/msg00002.html
- https://lists.debian.org/debian-lts-announce/2019/05/msg00041.html
- https://lists.debian.org/debian-lts-announce/2019/05/msg00042.html
- https://lore.kernel.org/linux-bluetooth/20190110062917.GB15047@kroah.com/
- https://marc.info/?l=oss-security&m=154721580222522&w=2
- https://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-3460.html
- https://marc.info/?l=oss-security&m=154721580222522&w=2
- https://launchpad.net/bugs/cve/CVE-2019-3460
- https://lore.kernel.org/linux-bluetooth/20190110062833.GA15047@kroah.com/
- https://seclists.org/oss-sec/2019/q1/58
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1665925
- https://lore.kernel.org/linux-bluetooth/20190110062917.GB15047%40kroah.com/
- https://security-tracker.debian.org/tracker/CVE-2019-3460
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3460
- https://nvd.nist.gov/vuln/detail/CVE-2019-3460
- https://ubuntu.com/security/CVE-2019-3460
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2019-3460?
The severity of CVE-2019-3460 is classified as high due to the potential for an attacker to exploit Bluetooth functionalities.
How do I fix CVE-2019-3460?
To fix CVE-2019-3460, update your Linux kernel to versions 0:3.10.0-1062.rt56.1022.el7, 0:3.10.0-1062.el7, or other specified remedial versions.
Which systems are affected by CVE-2019-3460?
CVE-2019-3460 affects various Linux distributions including Red Hat, Ubuntu, and Debian, specifically certain kernel versions.
Can I be attacked through CVE-2019-3460 if my Bluetooth is turned off?
If Bluetooth is turned off, the vulnerability exploited by CVE-2019-3460 cannot be triggered, but keeping software updated is still recommended.
What types of attacks are possible with CVE-2019-3460?
CVE-2019-3460 can allow an attacker within Bluetooth range to conduct man-in-the-middle attacks or potentially execute arbitrary code.
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