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CVE-2019-10638

Publication date 5 July 2019

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

6.5 · Medium

Score breakdown

In the Linux kernel before 5.1.7, a device can be tracked by an attacker using the IP ID values the kernel produces for connection-less protocols (e.g., UDP and ICMP). When such traffic is sent to multiple destination IP addresses, it is possible to obtain hash collisions (of indices to the counter array) and thereby obtain the hashing key (via enumeration). An attack may be conducted by hosting a crafted web page that uses WebRTC or gQUIC to force UDP traffic to attacker-controlled IP addresses.

From the Ubuntu Security Team

Amit Klein and Benny Pinkas discovered that the Linux kernel did not sufficiently randomize IP ID values generated for connectionless networking protocols. A remote attacker could use this to track particular Linux devices.

Read the notes from the security team

Status

Package Ubuntu Release Status
linux 19.10 eoan
Not affected
19.04 disco
Fixed 5.0.0-27.28
18.10 cosmic Ignored
18.04 LTS bionic
Fixed 4.15.0-60.67
16.04 LTS xenial
Fixed 4.4.0-161.189
14.04 LTS trusty Ignored
linux-aws 19.10 eoan
Not affected
19.04 disco
Fixed 5.0.0-1014.16
18.10 cosmic Ignored
18.04 LTS bionic
Fixed 4.15.0-1047.49
16.04 LTS xenial
Fixed 4.4.0-1092.103
14.04 LTS trusty Ignored
linux-aws-5.0 19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-aws-hwe 19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial
Fixed 4.15.0-1047.49~16.04.1
14.04 LTS trusty Not in release
linux-azure 19.10 eoan
Not affected
19.04 disco
Fixed 5.0.0-1018.19
18.10 cosmic Ignored
18.04 LTS bionic
Fixed 5.0.0-1018.19~18.04.1
16.04 LTS xenial
Fixed 4.15.0-1056.61
14.04 LTS trusty Ignored
linux-azure-5.3 19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-azure-edge 19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic
Fixed 5.0.0-1018.19~18.04.1
16.04 LTS xenial
Fixed 4.15.0-1056.61
14.04 LTS trusty Not in release
linux-euclid 19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-flo 19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-gcp 19.10 eoan
Not affected
19.04 disco
Fixed 5.0.0-1015.15
18.10 cosmic Ignored
18.04 LTS bionic
Fixed 4.15.0-1042.45
16.04 LTS xenial
Fixed 4.15.0-1041.43
14.04 LTS trusty Not in release
linux-gcp-5.3 19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-gcp-edge 19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic
Fixed 4.15.0-1042.45
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-gke 19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-gke-4.15 19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Fixed 4.15.0-1041.43
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-gke-5.0 19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Fixed 5.0.0-1015.15~18.04.1
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-goldfish 19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-grouper 19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-hwe 19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic
Fixed 5.0.0-27.28~18.04.1
16.04 LTS xenial
Fixed 4.15.0-60.67~16.04.1
14.04 LTS trusty Not in release
linux-hwe-edge 19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Ignored
16.04 LTS xenial
Fixed 4.15.0-60.67~16.04.1
14.04 LTS trusty Not in release
linux-kvm 19.10 eoan
Not affected
19.04 disco
Fixed 5.0.0-1015.16
18.10 cosmic Ignored
18.04 LTS bionic
Fixed 4.15.0-1043.43
16.04 LTS xenial
Fixed 4.4.0-1056.63
14.04 LTS trusty Not in release
linux-lts-trusty 19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-lts-utopic 19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-lts-vivid 19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-lts-wily 19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-lts-xenial 19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Ignored
linux-maguro 19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-mako 19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-manta 19.10 eoan Not in release
19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-oem 19.10 eoan
Fixed 4.15.0-1059.68
19.04 disco Ignored
18.10 cosmic Ignored
18.04 LTS bionic
Fixed 4.15.0-1056.65
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-oem-5.4 19.10 eoan Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-oem-osp1 19.10 eoan
Fixed 5.0.0-1022.24
19.04 disco Ignored
18.04 LTS bionic
Fixed 5.0.0-1020.22
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-oracle 19.10 eoan
Not affected
19.04 disco
Fixed 5.0.0-1004.8
18.10 cosmic Ignored
18.04 LTS bionic
Fixed 4.15.0-1022.25
16.04 LTS xenial
Fixed 4.15.0-1022.25~16.04.1
14.04 LTS trusty Not in release
linux-oracle-5.0 19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-raspi2 19.10 eoan
Not affected
19.04 disco
Fixed 5.0.0-1015.15
18.10 cosmic Ignored
18.04 LTS bionic
Fixed 4.15.0-1044.47
16.04 LTS xenial
Fixed 4.4.0-1120.129
14.04 LTS trusty Not in release
linux-raspi2-5.3 19.10 eoan Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-snapdragon 19.10 eoan Not in release
19.04 disco
Fixed 5.0.0-1019.20
18.10 cosmic Not in release
18.04 LTS bionic
Fixed 4.15.0-1062.69
16.04 LTS xenial
Fixed 4.4.0-1124.130
14.04 LTS trusty Not in release

Notes

tyhicks

Kernels prior to 4.1 also need the following commit https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-3.16.y&id=8b197d3ce585d6777197e0633d71e5af7d98cb35

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
linux

Severity score breakdown

Parameter Value
Base score 6.5 · Medium
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-4116-1
    • Linux kernel vulnerabilities
    • 2 September 2019
    • USN-4114-1
    • Linux kernel vulnerabilities
    • 2 September 2019
    • USN-4118-1
    • Linux kernel (AWS) vulnerabilities
    • 2 September 2019
    • USN-4115-1
    • Linux kernel vulnerabilities
    • 2 September 2019
    • USN-4117-1
    • Linux kernel (AWS) vulnerabilities
    • 2 September 2019

Other references