Vulnerability Monitor

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CVE-2018-17157

In FreeBSD before 11.2-STABLE(r340854) and 11.2-RELEASE-p5, an integer overflow error when handling opcodes can cause memory corruption by sending a specially crafted NFSv4 request. Unprivileged remote users with access to the NFS server may be able to execute arbitrary code.

Security Impact Summary

This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 9.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 1 product from freebsd 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

2018-12-04T15:29:00.247

Last Modified

2024-11-21T03:53:58.980

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 9.8 (CRITICAL)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

10.0

Impact Score

10.0

Weaknesses

Type: Primary
CWE-190

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	freebsd	freebsd	< 11.2	Yes
Operating System	freebsd	freebsd	11.2	Yes

References

http://www.securityfocus.com/bid/106192 Third Party Advisory, VDB Entry ([email protected])
http://www.securitytracker.com/id/1042164 Patch, Third Party Advisory, VDB Entry ([email protected])
https://secuniaresearch.flexerasoftware.com/secunia_research/2018-25/ Third Party Advisory ([email protected])
https://security.freebsd.org/advisories/FreeBSD-SA-18:13.nfs.asc Patch, Vendor Advisory ([email protected])
http://www.securityfocus.com/bid/106192 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1042164 Patch, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://secuniaresearch.flexerasoftware.com/secunia_research/2018-25/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.freebsd.org/advisories/FreeBSD-SA-18:13.nfs.asc Patch, Vendor 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 freebsd'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.