CVE-2017-7539
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
6.1 Medium
AI Score
Confidence
High
0.061 Low
EPSS
Percentile
93.6%
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.
Affected configurations
References
www.openwall.com/lists/oss-security/2017/07/21/4
www.securityfocus.com/bid/99944
access.redhat.com/errata/RHSA-2017:2628
access.redhat.com/errata/RHSA-2017:3466
access.redhat.com/errata/RHSA-2017:3470
access.redhat.com/errata/RHSA-2017:3471
access.redhat.com/errata/RHSA-2017:3472
access.redhat.com/errata/RHSA-2017:3473
access.redhat.com/errata/RHSA-2017:3474
bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7539
git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=2b0bbc4f8809c972bad134bc1a2570dbb01dea0b
git.qemu.org/?p=qemu.git%3Ba=commitdiff%3Bh=ff82911cd3f69f028f2537825c9720ff78bc3f19
Related
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
6.1 Medium
AI Score
Confidence
High
0.061 Low
EPSS
Percentile
93.6%