CVE-2017-9524
The qemu-nbd server in QEMU (aka Quick Emulator), when built with the Network Block Device (NBD) Server support, allows remote attackers to cause a denial of service (segmentation fault and server crash) by leveraging failure to ensure that all…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.09%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
The qemu-nbd server in QEMU (aka Quick Emulator), when built with the Network Block Device (NBD) Server support, allows remote attackers to cause a denial of service (segmentation fault and server crash) by leveraging failure to ensure that all initialization occurs before talking to a client in the nbd_negotiate function.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 4.09% probability · 90th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- qemu/qemu · debian/debian linux
- Source
- cve@mitre.org
References
- http://www.debian.org/security/2017/dsa-3925Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/06/12/1Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/99011Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:1681Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1682Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2408Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg06240.htmlPatch, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2017-06/msg02321.htmlPatch, Third Party Advisory
- http://www.debian.org/security/2017/dsa-3925Third Party Advisory
- http://www.openwall.com/lists/oss-security/2017/06/12/1Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/99011Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2017:1681Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:1682Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:2408Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg06240.htmlPatch, Third Party Advisory
- https://lists.gnu.org/archive/html/qemu-devel/2017-06/msg02321.htmlPatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.