Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2011-1547

Multiple stack consumption vulnerabilities in the kernel in NetBSD 4.0, 5.0 before 5.0.3, and 5.1 before 5.1.1, when IPsec is enabled, allow remote attackers to cause a denial of service (memory corruption and panic) or possibly have unspecified other impact via a crafted (1) IPv4 or (2) IPv6 packet with nested IPComp headers.

Security Impact Summary

CVE-2011-1547 is a security vulnerability that . Impacting 1 product from netbsd organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2011, 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

2011-05-09T19:55:03.553

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 6.8 (MEDIUM)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

6.4

Weaknesses

Type: Primary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	netbsd	netbsd	4.0	Yes
Operating System	netbsd	netbsd	5.0	Yes
Operating System	netbsd	netbsd	5.0.1	Yes
Operating System	netbsd	netbsd	5.0.2	Yes
Operating System	netbsd	netbsd	5.1	Yes

References

http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2011-004.txt.asc Vendor Advisory ([email protected])
http://lists.grok.org.uk/pipermail/full-disclosure/2011-April/080031.html ([email protected])
http://www.kb.cert.org/vuls/id/668220 US Government Resource ([email protected])
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2011-004.txt.asc Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.grok.org.uk/pipermail/full-disclosure/2011-April/080031.html (af854a3a-2127-422b-91ae-364da2661108)
http://www.kb.cert.org/vuls/id/668220 US Government Resource (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 netbsd'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.