CVE-2017-7539

Advisory lineage Upstream: 0 Downstream: 7
Modified
Published: 26 Jul 2018, 14:00
Last modified:05 Aug 2024, 16:04

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.5 HIGH
v3.0 (nvd)
EPSS Score
2.97% LOW
3% probability +0.21%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

26 Jul 2018, 14:00
Published
Vulnerability first disclosed
05 Aug 2024, 16:04
Last Modified
Vulnerability information updated

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 Metrics

  • v3.0•MEDIUM•Score: 5.3CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  • v3.0•HIGH•Score: 7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 2.97%• Percentile: 87%

Techniques & Countermeasures

  • CWE-20•Improper Input Validation

    The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

  • CWE-617•Reachable Assertion

    The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.

Affected Systems

  • qemu•qemu

    < 2.10.1 | 2.10.1

  • redhat•openstack

    6.0 | 7.0 | 8 | 9 | 10 | 11

  • redhat•virtualization

    4.0 | 3.0

References (12)