CVE-2019-3459: Infoleak

Published Jan 3, 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. An attacker, within the range of standard Bluetooth transmissions, can create and send 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.

Other sources

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.

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.

— Red Hat

A heap address information leak while using L2CAPGETCONFOPT was discovered in the Linux kernel before 5.1-rc1.

— Ubuntu

Affected Software

75 affected componentsFixes available
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
Linux Linux kernel<=5.1
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=18.10
redhat Codeready Linux Builder=8.0
redhat Enterprise Linux=5.0
redhat Enterprise Linux=6.0
redhat Enterprise Linux=7.0
redhat Enterprise Linux=8.0
redhat Enterprise Linux Desktop=7.0
redhat Enterprise Linux Eus=8.1
redhat Enterprise Linux Eus=8.2
redhat Enterprise Linux Eus=8.4
redhat Enterprise Linux For Real Time=7
redhat Enterprise Linux For Real Time=8
redhat Enterprise Linux For Real Time For Nfv=7
redhat Enterprise Linux For Real Time For Nfv=8
redhat Enterprise Linux For Real Time For Nfv Tus=8.2
redhat Enterprise Linux For Real Time For Nfv Tus=8.4
redhat Enterprise Linux For Real Time Tus=8.2
redhat Enterprise Linux For Real Time Tus=8.4
redhat Enterprise Linux Server=7.0
redhat Enterprise Linux Server Aus=8.2
redhat Enterprise Linux Server Aus=8.4
redhat Enterprise Linux Server Tus=8.2
redhat Enterprise Linux Server Tus=8.4
redhat Enterprise Linux Workstation=7.0
redhat Enterprise MRG=2.0
Debian Debian Linux=8.0
debian/linux
6.1.176-16.1.190-16.12.107-16.12.113-17.2.12-17.2.13-1
ubuntu/linux<3.13.0-168.218
3.13.0-168.218
ubuntu/linux-aws<4.4.0-1040.43
4.4.0-1040.43
ubuntu/linux-azure<4.15.0-1041.45~14.04.1
4.15.0-1041.45~14.04.1
ubuntu/linux-lts-xenial<4.4.0-144.170~14.04.1
4.4.0-144.170~14.04.1
ubuntu/linux<4.4.0-145.171
4.4.0-145.171
ubuntu/linux-aws<4.4.0-1079.89
4.4.0-1079.89
ubuntu/linux-aws-hwe<4.15.0-1035.37~16.04.1
4.15.0-1035.37~16.04.1
ubuntu/linux-azure<4.15.0-1041.45
4.15.0-1041.45
ubuntu/linux-gcp<4.15.0-1029.31~16.04.1
4.15.0-1029.31~16.04.1
ubuntu/linux-hwe<4.15.0-47.50~16.04.1
4.15.0-47.50~16.04.1
ubuntu/linux-kvm<4.4.0-1043.49
4.4.0-1043.49
ubuntu/linux-oracle<4.15.0-1010.12~16.04.1
4.15.0-1010.12~16.04.1
ubuntu/linux-raspi2<4.4.0-1106.114
4.4.0-1106.114
ubuntu/linux-snapdragon<4.4.0-1110.115
4.4.0-1110.115
ubuntu/linux-fips<4.4.0-1008.10
4.4.0-1008.10
ubuntu/linux<4.15.0-47.50
4.15.0-47.50
ubuntu/linux-aws<4.15.0-1035.37
4.15.0-1035.37
ubuntu/linux-azure<4.18.0-1014.14~18.04.1
4.18.0-1014.14~18.04.1
ubuntu/linux-gcp<4.15.0-1029.31
4.15.0-1029.31
ubuntu/linux-gcp-edge<4.18.0-1008.9~18.04.1
4.18.0-1008.9~18.04.1
ubuntu/linux-hwe<4.18.0-17.18~18.04.1
4.18.0-17.18~18.04.1
ubuntu/linux-kvm<4.15.0-1031.31
4.15.0-1031.31
ubuntu/linux-oem<4.15.0-1035.40
4.15.0-1035.40
ubuntu/linux-oracle<4.15.0-1010.12
4.15.0-1010.12
ubuntu/linux-raspi2<4.15.0-1033.35
4.15.0-1033.35
ubuntu/linux-snapdragon<4.15.0-1053.57
4.15.0-1053.57
ubuntu/linux-azure-fde*
ubuntu/linux-azure-fde-5.15*
ubuntu/linux-gke*
ubuntu/linux-raspi2*
ubuntu/linux-riscv*
ubuntu/linux-intel-iot-realtime*
ubuntu/linux-realtime*
ubuntu/linux-riscv*
ubuntu/linux-azure-6.11*
ubuntu/linux-gcp-6.11*
ubuntu/linux-hwe-6.11*
ubuntu/linux-lowlatency-hwe-6.11*
ubuntu/linux-raspi-realtime*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 0:3.10.0-1062.rt56.1022.el7
  2. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:3.10.0-1062.el7
  3. Upgrade

    Upgrade redhat/kernel-alt to a version that resolves this vulnerability.

    Fixed in 0:4.14.0-115.18.1.el7a
  4. Upgrade

    Upgrade redhat/kernel-rt to a version that resolves this vulnerability.

    Fixed in 0:4.18.0-147.rt24.93.el8
  5. Upgrade

    Upgrade redhat/kernel to a version that resolves this vulnerability.

    Fixed in 0:4.18.0-147.el8
  6. Upgrade

    Upgrade debian/linux to a version that resolves this vulnerability.

    Fixed in 6.1.176-1Fixed in 6.1.190-1Fixed in 6.12.107-1Fixed in 6.12.113-1Fixed in 7.2.12-1Fixed in 7.2.13-1
  7. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 3.13.0-168.218
  8. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.4.0-1040.43
  9. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 4.15.0-1041.45~14.04.1
  10. Upgrade

    Upgrade ubuntu/linux-lts-xenial to a version that resolves this vulnerability.

    Fixed in 4.4.0-144.170~14.04.1
  11. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 4.4.0-145.171
  12. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.4.0-1079.89
  13. Upgrade

    Upgrade ubuntu/linux-aws-hwe to a version that resolves this vulnerability.

    Fixed in 4.15.0-1035.37~16.04.1
  14. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 4.15.0-1041.45
  15. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 4.15.0-1029.31~16.04.1
  16. Upgrade

    Upgrade ubuntu/linux-hwe to a version that resolves this vulnerability.

    Fixed in 4.15.0-47.50~16.04.1
  17. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 4.4.0-1043.49
  18. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 4.15.0-1010.12~16.04.1
  19. Upgrade

    Upgrade ubuntu/linux-raspi2 to a version that resolves this vulnerability.

    Fixed in 4.4.0-1106.114
  20. Upgrade

    Upgrade ubuntu/linux-snapdragon to a version that resolves this vulnerability.

    Fixed in 4.4.0-1110.115
  21. Upgrade

    Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.

    Fixed in 4.4.0-1008.10
  22. Upgrade

    Upgrade ubuntu/linux to a version that resolves this vulnerability.

    Fixed in 4.15.0-47.50
  23. Upgrade

    Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.

    Fixed in 4.15.0-1035.37
  24. Upgrade

    Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.

    Fixed in 4.18.0-1014.14~18.04.1
  25. Upgrade

    Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.

    Fixed in 4.15.0-1029.31
  26. Upgrade

    Upgrade ubuntu/linux-gcp-edge to a version that resolves this vulnerability.

    Fixed in 4.18.0-1008.9~18.04.1
  27. Upgrade

    Upgrade ubuntu/linux-hwe to a version that resolves this vulnerability.

    Fixed in 4.18.0-17.18~18.04.1
  28. Upgrade

    Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.

    Fixed in 4.15.0-1031.31
  29. Upgrade

    Upgrade ubuntu/linux-oem to a version that resolves this vulnerability.

    Fixed in 4.15.0-1035.40
  30. Upgrade

    Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.

    Fixed in 4.15.0-1010.12
  31. Upgrade

    Upgrade ubuntu/linux-raspi2 to a version that resolves this vulnerability.

    Fixed in 4.15.0-1033.35
  32. Upgrade

    Upgrade ubuntu/linux-snapdragon to a version that resolves this vulnerability.

    Fixed in 4.15.0-1053.57
  33. Configuration

    Put the system in airport mode to disable the Bluetooth connection.

    Bluetooth airport mode = enabled
  34. Configuration

    Disable the Bluetooth hardware in the BIOS.

    System BIOS Bluetooth hardware = disabled
  35. Configuration

    Prevent the Bluetooth kernel modules from loading.

    Linux Bluetooth stack Bluetooth kernel module loading = prevented

Event History

Jan 3, 2019
Data Sourced
via Red Hat·11:24 AM
DescriptionSeverityAffected Software
Jan 11, 2019
CVE Published
12:00 AM
Jan 14, 2019
Data Sourced
via Ubuntu·12:00 AM
RemedyDescriptionSeverityAffected Software
Data Sourced
via OSV·12:00 AM
DescriptionSeverityAffected Software
Apr 11, 2019
CVE Published
via MITRE·03:53 PM
Data Sourced
via MITRE·03:53 PM
DescriptionWeakness
Data Sourced
via NVD·04:29 PM
RemedyDescriptionSeverityWeaknessAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What is the severity of CVE-2019-3459?

CVE-2019-3459 has been rated as a moderate severity vulnerability.

2

How do I fix CVE-2019-3459?

To fix CVE-2019-3459, ensure your system is updated to a version of the Linux kernel that is not affected, such as those specified in the advisory.

3

What systems are affected by CVE-2019-3459?

CVE-2019-3459 impacts several versions of the Linux kernel on various systems including Red Hat, Ubuntu, and Debian.

4

Can CVE-2019-3459 be exploited remotely?

CVE-2019-3459 can be exploited by attackers within range of standard Bluetooth transmissions.

5

Is there a patch available for CVE-2019-3459?

Yes, patches for CVE-2019-3459 are available in the updated kernel releases from the affected distributions.

Company

Resources

Contact

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