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CVE-2017-15119

Publication date 28 November 2017

Last updated 24 July 2024


Ubuntu priority

Cvss 3 Severity Score

8.6 · High

Score breakdown

The Network Block Device (NBD) server in Quick Emulator (QEMU) before 2.11 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.

Read the notes from the security team

Status

Package Ubuntu Release Status
qemu 17.10 artful
Fixed 1:2.10+dfsg-0ubuntu3.5
17.04 zesty Ignored end of life
16.04 LTS xenial
Fixed 1:2.5+dfsg-5ubuntu10.22
14.04 LTS trusty
Not affected
qemu-kvm 17.10 artful Not in release
17.04 zesty Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release

Notes


mdeslaur

trusty already has a length check there

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
qemu

Severity score breakdown

Parameter Value
Base score 8.6 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Changed
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-3575-1
    • QEMU vulnerabilities
    • 20 February 2018

Other references