Bug 1879472 (CVE-2020-14377) - CVE-2020-14377 dpdk: write_back_data buffer over read (cipher->para.dst_data_len & desc->len)
Summary: CVE-2020-14377 dpdk: write_back_data buffer over read (cipher->para.dst_data_...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2020-14377
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1883276 1910487
Blocks: 1879474
TreeView+ depends on / blocked
 
Reported: 2020-09-16 11:20 UTC by Dhananjay Arunesh
Modified: 2022-05-17 10:25 UTC (History)
24 users (show)

Fixed In Version: dpdk 18.11.10, dpdk 19.11.5
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in dpdk. A complete lack of validation of attacker-controlled parameters can lead to a buffer over read. The results of the over read are then written back to the guest virtual machine memory. This vulnerability can be used by an attacker in a virtual machine to read significant amounts of host memory. The highest threat from this vulnerability is to data confidentiality and system availability.
Clone Of:
Environment:
Last Closed: 2020-09-28 20:41:06 UTC


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Description Dhananjay Arunesh 2020-09-16 11:20:55 UTC
Complete lack of validation of attacker-controlled parameters leads to a buffer over read. The results of the over read are written back to the guest virtual machine=E2=80=99s memory. This vulnerability can be used by an attacker in a virtual machine to read significant amounts of host memory. This vulnerability can be chained with finding number 1 to read arbitrary amounts of data from any address in the vhost_crypto process.

Comment 8 Dave Baker 2020-09-28 15:52:31 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 15:56:54 UTC
Acknowledgments:

Name: Ryan Hall

Comment 10 Dave Baker 2020-09-28 15:56:57 UTC
External References:

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

Comment 11 Dave Baker 2020-09-28 15:57:25 UTC
Created dpdk tracking bugs for this issue:

Affects: fedora-all [bug 1883276]

Comment 12 Product Security DevOps Team 2020-09-28 20:41:06 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-2020-14377


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