VulnerabilityModified
CVE-2017-7539
This could crash the qemu-nbd server if a client sent unexpected data during connection negotiation.
HIGH 7.5EPSS 5.53%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.53%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 5.53% probability · 92th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-617, CWE-20
- Affected
- qemu/qemu · redhat/openstack · redhat/virtualization
- Source
- secalert@redhat.com
References
- http://www.openwall.com/lists/oss-security/2017/07/21/4Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/99944Third Party Advisory, VDB 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 Tracking, Patch, Third Party Advisory
- https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=2b0bbc4f8809c972bad134bc1a2570dbb01dea0b
- https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=ff82911cd3f69f028f2537825c9720ff78bc3f19
- http://www.openwall.com/lists/oss-security/2017/07/21/4Mailing List, Patch, Third Party Advisory
- http://www.securityfocus.com/bid/99944Third Party Advisory, VDB 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 Tracking, Patch, Third Party Advisory
- https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=2b0bbc4f8809c972bad134bc1a2570dbb01dea0b
- https://git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=ff82911cd3f69f028f2537825c9720ff78bc3f19
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.