Bug 1879473 (CVE-2020-14378) - CVE-2020-14378 dpdk: partial Denial of Service due to Integer Underflow
Summary: CVE-2020-14378 dpdk: partial Denial of Service due to Integer Underflow
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2020-14378
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1883277 1910515
Blocks: 1879474
TreeView+ depends on / blocked
 
Reported: 2020-09-16 11:24 UTC by Dhananjay Arunesh
Modified: 2022-10-02 21:50 UTC (History)
24 users (show)

Fixed In Version: dpdk 18.11.10, dpdk 19.11.5
Clone Of:
Environment:
Last Closed: 2020-09-28 20:41:10 UTC
Embargoed:


Attachments (Terms of Use)

Description Dhananjay Arunesh 2020-09-16 11:24:07 UTC
An integer underflow in the move_desc function can lead to many cpu cycles being eaten up in a long running loop. An attacker could cause move_desc to get stuck in a 4,294,967,295 iteration loop. Depending on how vhost_crypto is being used this could prevent other VMs or network tasks from being serviced by the busy DPDK lcore for an extended period.

Comment 8 Dave Baker 2020-09-28 15:52:36 UTC
Statement:

This flaw does not affect the versions of `dpdk` as shipped with Red Hat Enterprise Linux 7 and 8 or the versions embedded in Red Hat Virtualization or the Fast Datapath `openvswitch` package, as they do not enable generic crypto device library support. This causes the vulnerable code in vhost_crypto.c to not be included.

This flaw does not affect Red Hat Ceph Storage 3 and 4 as dpdk (embedded in ceph source rpm) is not built in the packages, therefore the vulnerable code is not available in the resulting RPM and the issue cannot be exploited.

Comment 9 Dave Baker 2020-09-28 15:56:58 UTC
Acknowledgments:

Name: Ryan Hall

Comment 10 Dave Baker 2020-09-28 15:57:00 UTC
External References:

https://www.openwall.com/lists/oss-security/2020/09/28/3

Comment 11 Dave Baker 2020-09-28 15:57:27 UTC
Created dpdk tracking bugs for this issue:

Affects: fedora-all [bug 1883277]

Comment 12 Product Security DevOps Team 2020-09-28 20:41:10 UTC
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-2020-14378


Note You need to log in before you can comment on or make changes to this bug.