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Bug 1516925 - (CVE-2017-15119) CVE-2017-15119 qemu: DoS via large option request
CVE-2017-15119 qemu: DoS via large option request
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20171128,repor...
: Security
Depends On: 1518239 1518238 1518529 1518530 1518531 1518532 1518533 1518534 1518535 1518536 1518551 1520242
Blocks: 1516927 1520691
  Show dependency tree / graph
 
Reported: 2017-11-23 10:16 EST by Adam Mariš
Modified: 2018-07-27 03:58 EDT (History)
55 users (show)

See Also:
Fixed In Version: qemu 2.11
Doc Type: Bug Fix
Doc Text:
The Network Block Device (NBD) server in Quick Emulator (QEMU), is vulnerable to a denial of service issue. It could occur if a client sent large option requests, making the server waste CPU time on reading up to 4GB per request. A client could use this flaw to keep the NBD server from serving other requests, resulting in DoS.
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Clone Of:
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Last Closed:
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
Proposed patch (1.38 KB, patch)
2017-11-23 10:25 EST, Adam Mariš 		no flags Details | Diff
Add an attachment (proposed patch, testcase, etc.)


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:1104 None None None 2018-04-10 14:59 EDT
Red Hat Product Errata RHSA-2018:1113 None None None 2018-04-11 14:04 EDT

  None (edit)
Description Adam Mariš 2017-11-23 10:16:27 EST 
Quick Emulator(Qemu) built with the Network Block Device(NBD) server support is vulnerable to a denial-of-service issue. It could occur if a client sent large option requests, making server waste CPU time on reading up to 4G bytes.

A client could use this flaw to keep the NBD server from serving other requests, resulting in DoS.

Upstream patch:
---------------
  -> https://lists.gnu.org/archive/html/qemu-devel/2017-11/msg05044.html

Reference:
----------
  -> http://www.openwall.com/lists/oss-security/2017/11/28/9
Comment 1 Adam Mariš 2017-11-23 10:16:44 EST 
Acknowledgments:

Name: Eric Blake (Red Hat)
Comment 2 Adam Mariš 2017-11-23 10:25 EST 
Created attachment 1358263 [details]
Proposed patch
Comment 3 Prasad J Pandit 2017-11-28 08:28:33 EST 
Created qemu tracking bugs for this issue:

Affects: epel-7 [bug 1518239]
Affects: fedora-all [bug 1518238]
Comment 8 Mark Knowles 2017-12-04 01:20:37 EST 
Created qemu-kvm tracking bugs for this issue:

Affects: openshift-1 [bug 1520241]
Comment 19 errata-xmlrpc 2018-04-10 14:58:51 EDT 
This issue has been addressed in the following products:

  Red Hat Virtualization 4 for RHEL-7

Via RHSA-2018:1104 https://access.redhat.com/errata/RHSA-2018:1104
Comment 20 errata-xmlrpc 2018-04-11 14:04:18 EDT 
This issue has been addressed in the following products:

  Red Hat OpenStack Platform 10.0 (Newton)
  Red Hat OpenStack Platform 11.0 (Ocata)
  Red Hat OpenStack Platform 8.0 (Liberty)
  Red Hat OpenStack Platform 9.0 (Mitaka)
  Red Hat OpenStack Platform 12.0 (Pike)

Via RHSA-2018:1113 https://access.redhat.com/errata/RHSA-2018:1113
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