High severity · published Jul 26, 2018
CVE-2017-7539
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
7.5
CVSS
5.5%
EPSS
No
On KEV
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 vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.5% · higher than 93% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
Openstack · Redhat
6.0; 7.0; 8; 9; 10; 11 · source: NVD
QE
Qemu · Qemu
before 2.10.1 · source: NVD
VI
Virtualization · Redhat
4.0; 3.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-7539
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-7539
Mailing List
http://www.openwall.com/lists/oss-security/2017/07/21/4
Third Party Advisory
http://www.securityfocus.com/bid/99944
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2628
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:3466
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:3470
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:3471
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