Vulnerability identifier: #VU12427

Vulnerability risk: Medium

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-404

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
NetBSD
Operating systems & Components / Operating system

Vendor: NetBSD Foundation, Inc

Description
The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the IPsec output path due to a sanity check isn't strong enough. A remote attacker can cause the service to crash when both IPsec and IPv6 forwarding are enabled.

Mitigation
Install update from vendor's website.

Vulnerable software versions

NetBSD: 6.0 - 7.1.2

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External links
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2018-007.txt.asc

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.