Unrated severityNVD Advisory· Published Nov 23, 2004· Updated Jun 16, 2026
CVE-2004-0257
CVE-2004-0257
Description
OpenBSD 3.4 and NetBSD 1.6 and 1.6.1 allow remote attackers to cause a denial of service (crash) by sending an IPv6 packet with a small MTU to a listening port and then issuing a TCP connect to that port.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
9cpe:2.3:o:openbsd:openbsd:3.0:*:*:*:*:*:*:*+ 5 more
- cpe:2.3:o:openbsd:openbsd:3.0:*:*:*:*:*:*:*
- cpe:2.3:o:openbsd:openbsd:3.1:*:*:*:*:*:*:*
- cpe:2.3:o:openbsd:openbsd:3.2:*:*:*:*:*:*:*
- cpe:2.3:o:openbsd:openbsd:3.3:*:*:*:*:*:*:*
- cpe:2.3:o:openbsd:openbsd:3.4:*:*:*:*:*:*:*
- (no CPE)range: 3.4
Patches
Vulnerability mechanics
References
8- www.securityfocus.com/bid/9577nvdPatchVendor Advisory
- ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2004-002.txt.ascnvd
- lists.grok.org.uk/pipermail/full-disclosure/2004-February/016704.htmlnvd
- marc.infonvd
- www.guninski.com/obsdmtu.htmlnvd
- www.openbsd.org/cgi-bin/cvsweb/src/sys/netinet6/ip6_output.cnvd
- www.osvdb.org/3825nvd
- exchange.xforce.ibmcloud.com/vulnerabilities/15044nvd
News mentions
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