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CVE-2017-7539

Publication date 26 July 2018

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

An assertion-failure flaw was found in Qemu before 2.10.1, in the Network Block Device (NBD) server's initial connection negotiation, where the I/O coroutine was undefined. This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation. A remote user or process could use this flaw to crash the qemu-nbd server resulting in denial of service.

Read the notes from the security team

Status

Package Ubuntu Release Status
qemu 17.04 zesty
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected
qemu-kvm 17.04 zesty Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release

Notes

seth-arnold

Debian triage suggests it was introduced in v2.9.0-rc0

Patch details

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

Package Patch details
qemu
qemu-kvm

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H