Vulnerability Monitor

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CVE-2013-5691

The (1) IPv6 and (2) ATM ioctl request handlers in the kernel in FreeBSD 8.3 through 9.2-STABLE do not validate SIOCSIFADDR, SIOCSIFBRDADDR, SIOCSIFDSTADDR, and SIOCSIFNETMASK requests, which allows local users to perform link-layer actions, cause a denial of service (panic), or possibly gain privileges via a crafted application.

Security Impact Summary

CVE-2013-5691 is a security vulnerability that . Impacting 1 product from freebsd organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2013, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2013-09-23T10:18:59.237

Last Modified

2026-04-29T01:13:23.040

Status

Modified

Source

[email protected]

Severity

CVSSv2: 6.9 (MEDIUM)

CVSSv2 Vector

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

Access Vector: LOCAL
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: COMPLETE
Integrity Impact: COMPLETE
Availability Impact: COMPLETE

Exploitability Score

3.4

Impact Score

10.0

Weaknesses

Type: Primary
CWE-264

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	freebsd	freebsd	8.3	Yes
Operating System	freebsd	freebsd	9.0	Yes
Operating System	freebsd	freebsd	9.1	Yes
Operating System	freebsd	freebsd	9.2	Yes

References

http://secunia.com/advisories/54861 ([email protected])
http://svnweb.freebsd.org/base?view=revision&revision=255442 Patch ([email protected])
http://www.debian.org/security/2013/dsa-2769 ([email protected])
http://www.freebsd.org/security/advisories/FreeBSD-SA-13:12.ifioctl.asc Vendor Advisory ([email protected])
http://secunia.com/advisories/54861 (af854a3a-2127-422b-91ae-364da2661108)
http://svnweb.freebsd.org/base?view=revision&revision=255442 Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2013/dsa-2769 (af854a3a-2127-422b-91ae-364da2661108)
http://www.freebsd.org/security/advisories/FreeBSD-SA-13:12.ifioctl.asc 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.