Improper input validation in Qemu

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. 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.

EPSS: 0.055 (92.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2017-7539?
CVE-2017-7539 is a medium-severity vulnerability in Qemu, classified under Reachable Assertion. CVSS score: 5.3/10. Published 2018-07-26.
How severe is CVE-2017-7539?
Medium severity. CVSS v3 base score is 5.3 out of 10.