Bug 1783540 (CVE-2019-19534)
| Summary: | CVE-2019-19534 kernel: information leak bug caused by a malicious USB device in the drivers/net/can/usb/peak_usb/pcan_usb_core.c driver | ||
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| Product: | [Other] Security Response | Reporter: | msiddiqu |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | acaringi, airlied, bhu, blc, brdeoliv, bskeggs, dhoward, dvlasenk, esammons, fhrbata, hdegoede, hkrzesin, iboverma, ichavero, itamar, jarodwilson, jeremy, jforbes, jglisse, jlelli, john.j5live, jonathan, josef, jross, jshortt, jstancek, jwboyer, kernel-maint, kernel-mgr, labbott, lgoncalv, linville, masami256, matt, mchehab, mcressma, mjg59, mlangsdo, nmurray, qzhao, rt-maint, rvrbovsk, steved, williams |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: |
An information-leak flaw was found in the Linux kernel's pcan USB driver. When a device using this driver connects to the system, the stack information is leaked to the CAN bus, a controller area network for automobiles. The highest threat with this vulnerability is breach of data confidentiality.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2020-04-28 16:35:01 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 1787484, 1787485, 1787486, 1787487, 1796101, 1796102 | ||
| Bug Blocks: | 1783543 | ||
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Description
msiddiqu
2019-12-13 21:34:00 UTC
This was fixed for Fedora with the 5.3.11 stable kernel update. At this time, it appears that the stack information leak would appear on the CANBUS. For interested parties this is not a 'traditional' network like ethernet but specifically used in car/boat/industrial style applications. This would leak a system that -has- one of these usb devices attached to devices 'on' the canbus. Mitigation: As the devices module will be auto-loaded when the USB CAN bus adapter is connected, its can be disabled by preventing the module from loading with the following instructions: # echo "install peak_usb /bin/true" >> /etc/modprobe.d/disable-peak-usb-canbus.conf The system will need to be restarted if the peak_usb module is already loaded. In most circumstances, the kernel modules will be unable to be unloaded while any CAN bus interfaces are active and the protocol is in use. If the system requires this module to work correctly, this mitigation may not be suitable. If you need further assistance, see KCS article https://access.redhat.com/solutions/41278 or contact Red Hat Global Support Services. Created kernel tracking bugs for this issue: Affects: fedora-all [bug 1796101] This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2020:1567 https://access.redhat.com/errata/RHSA-2020:1567 This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2020:1769 https://access.redhat.com/errata/RHSA-2020:1769 This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2019-19534 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2020:4062 https://access.redhat.com/errata/RHSA-2020:4062 This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2020:4060 https://access.redhat.com/errata/RHSA-2020:4060 |