Vulnerability Monitor

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CVE-2018-18438

Qemu has integer overflows because IOReadHandler and its associated functions use a signed integer data type for a size value.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.5, requiring local system access to exploit with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 3 products from qemu, from redhat, from redhat organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2018, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2018-10-19T22:29:02.287

Last Modified

2024-11-21T03:55:56.193

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 5.5 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:N/I:N/A:P

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

3.9

Impact Score

2.9

Weaknesses

Type: Primary
CWE-190

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	qemu	qemu	-	Yes
Operating System	redhat	enterprise_linux	6.0	Yes
Operating System	redhat	enterprise_linux	7.0	Yes
Application	redhat	openstack	8	Yes
Application	redhat	openstack	9	Yes
Application	redhat	openstack	10	Yes
Application	redhat	openstack	12	Yes
Application	redhat	openstack	13	Yes

References

http://www.openwall.com/lists/oss-security/2018/10/17/3 Mailing List, Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/105953 Third Party Advisory, VDB Entry ([email protected])
https://lists.gnu.org/archive/html/qemu-devel/2018-10/msg02396.html Mailing List, Patch, Third Party Advisory ([email protected])
https://lists.gnu.org/archive/html/qemu-devel/2018-10/msg02402.html Mailing List, Patch, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2018/10/17/3 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/105953 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://lists.gnu.org/archive/html/qemu-devel/2018-10/msg02396.html Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.gnu.org/archive/html/qemu-devel/2018-10/msg02402.html Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For qemu's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.