Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Qemu | Qemu | < 2.10.1 |
| Redhat | Openstack | 6.0 |
| Redhat | Virtualization | 4.0 |
| Redhat | Enterprise Linux | 7.0 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2017/07/21/4Mailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/99944Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:2628Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:3466Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:3470Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:3471Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:3472Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:3473Third Party Advisory
- https://access.redhat.com/errata/RHSA-2017:3474Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7539Issue TrackingPatchThird Party Advisory
- https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=2b0bbc4f8809c972bad134bc1a25
- https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=ff82911cd3f69f028f2537825c97
- http://www.openwall.com/lists/oss-security/2017/07/21/4Mailing ListPatchThird Party Advisory
- http://www.securityfocus.com/bid/99944Third Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2017:2628Third Party Advisory
FAQ
What is CVE-2017-7539?
CVE-2017-7539 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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-n...
How severe is CVE-2017-7539?
CVE-2017-7539 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-7539?
Check the references section above for vendor advisories and patch information. Affected products include: Qemu Qemu, Redhat Openstack, Redhat Virtualization, Redhat Enterprise Linux.