CVE-2019-10638: Weak Encryption
First published: Fri Jul 05 2019(Updated: )
A flaw was found in the way the Linux kernel derived the IP ID field from a partial kernel space address returned by a net_hash_mix() function. A remote user could observe a weak IP ID generation in this field to track Linux devices.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:3.10.0-1127.rt56.1093.el7 | 0:3.10.0-1127.rt56.1093.el7 |
| redhat/kernel | <0:3.10.0-1127.el7 | 0:3.10.0-1127.el7 |
| 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 |
| IBM Data Risk Manager | <=2.0.6 | |
| Linux Kernel | <5.1.7 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.128-1 6.12.20-1 6.12.21-1 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2019-10638 https://nvd.nist.gov/vuln/detail/CVE-2019-10638 https://arxiv.org/pdf/1906.10478.pdf
- https://bugzilla.redhat.com/show_bug.cgi?id=1729931
- https://access.redhat.com/errata/RHSA-2020:1070
- https://access.redhat.com/errata/RHSA-2020:1016
- https://access.redhat.com/errata/RHSA-2019:3309
- https://access.redhat.com/errata/RHSA-2019:3517
- https://access.redhat.com/security/cve/cve-2019-10638
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00014.html
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00025.html
- http://packetstormsecurity.com/files/155212/Slackware-Security-Advisory-Slackware-14.2-kernel-Updates.html
- http://www.securityfocus.com/bid/109092
- https://arxiv.org/pdf/1906.10478.pdf
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.0.8
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.1.7
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=355b98553789b646ed97ad801a619ff898471b92
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=df453700e8d81b1bdafdf684365ee2b9431fb702
- https://github.com/torvalds/linux/commit/355b98553789b646ed97ad801a619ff898471b92
- https://github.com/torvalds/linux/commit/55f0fc7a02de8f12757f4937143d8d5091b2e40b
- https://github.com/torvalds/linux/commit/df453700e8d81b1bdafdf684365ee2b9431fb702
- https://lists.debian.org/debian-lts-announce/2019/08/msg00016.html
- https://lists.debian.org/debian-lts-announce/2019/08/msg00017.html
- https://seclists.org/bugtraq/2019/Aug/13
- https://seclists.org/bugtraq/2019/Aug/18
- https://seclists.org/bugtraq/2019/Nov/11
- https://security.netapp.com/advisory/ntap-20190806-0001/
- https://usn.ubuntu.com/4114-1/
- https://usn.ubuntu.com/4115-1/
- https://usn.ubuntu.com/4116-1/
- https://usn.ubuntu.com/4117-1/
- https://usn.ubuntu.com/4118-1/
- https://www.debian.org/security/2019/dsa-4495
- https://www.debian.org/security/2019/dsa-4497
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://launchpad.net/bugs/cve/CVE-2019-10638
- https://git.kernel.org/linus/df453700e8d81b1bdafdf684365ee2b9431fb702
- https://git.kernel.org/linus/b6a7719aedd7e5c0f2df7641aa47386111682df4
- https://git.kernel.org/linus/5a352dd0a3aac03b443c94828dfd7144261c8636
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1729932
- https://exchange.xforce.ibmcloud.com/vulnerabilities/163731
- https://www.ibm.com/support/pages/node/6335281 (Advisory)
- https://security-tracker.debian.org/tracker/CVE-2019-10638
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-10638
- https://nvd.nist.gov/vuln/detail/CVE-2019-10638
- https://ubuntu.com/security/CVE-2019-10638
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is the severity of CVE-2019-10638?
CVE-2019-10638 is categorized as a medium severity vulnerability affecting the Linux kernel.
How do I fix CVE-2019-10638?
To fix CVE-2019-10638, update the Linux kernel to version 5.1.7 or later, or apply the relevant patches provided by your Linux distribution.
What systems are affected by CVE-2019-10638?
CVE-2019-10638 affects versions of the Linux kernel prior to 5.1.7 and specific Red Hat and IBM products listed in the vulnerability details.
What type of vulnerability is CVE-2019-10638?
CVE-2019-10638 is a tracking vulnerability that allows remote users to observe weak IP ID generation, potentially compromising device privacy.
Is CVE-2019-10638 exploitable remotely?
Yes, CVE-2019-10638 can be exploited by remote users to observe and track Linux devices.
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