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    CVE-2002-0381

    The TCP implementation in various BSD operating systems (tcp_input.c) does not properly block connections to broadcast addresses, which could allow remote attackers to bypass intended filters via packets with a unicast link layer address and an IP broadcast address.

    Published:Jun 25, 2002
    Last Modified:Apr 16, 2026
    EPS:Apr 2, 2003
    EPSS Score:0.00784
    CVSS Score:5

    Affected Products

    Vendor
    Freebsd
    Product
    Freebsd
    Vendor
    Netbsd
    Product
    Netbsd
    Vendor
    Openbsd
    Product
    Openbsd

    Exploits

    http://online.securityfocus.com/archive/1/262733http://online.securityfocus.com/archive/1/262733

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-58093 (CVSS 7) — The TIOCSCTTY ioctl handler drops the tty lock in order to acquire the process tree lock. After reacquiring t…
    CVE-2026-58097 (CVSS 7.8) — mp_SetEnddisc() copied a user-supplied PSN endpoint value without length validation, allowing a buffer overflo…
    CVE-2026-58096 (CVSS 8.8) — LcpDecodeConfig() did not validate the length of received endpoint discriminator options against the minimum r…
    CVE-2026-58095 (CVSS 8.8) — mp_Enddisc() used incorrect length calculations when formatting endpoint discriminator addresses for display, …
    CVE-2026-58092 (CVSS 8.1) — In FreeBSD 15.0, the kernel structure used to represent user credentials changed: previously the primary group…
    CVE-2026-58091 (CVSS 7.8) — The implementation of this ioctl attempts to acquire locks on all channels in a sync group. If locking a chan…
    CVE-2026-58090 (CVSS 7.8) — The SOCK_STREAM receive path in the unix socket implementation failed to fully detach control messages from th…
    CVE-2026-58089 (CVSS 7.8) — When a process calls execve(2) to execute a setuid or setgid image, hwpmc(4) is supposed to detach PMCs owned …
    CVE-2026-58088 (CVSS 7.4) — The ELF core dump code counted the number of dumpable VM map entries, allocated a buffer for the corresponding…

    References

    ftp://patches.sgi.com/support/free/security/advisories/20030604-01-I
    http://cvsweb.netbsd.org/bsdweb.cgi/syssrc/sys/netinet/tcp_input.c.diff?r1=1.136&r2=1.137
    http://online.securityfocus.com/archive/1/262733
    http://www.FreeBSD.org/cgi/query-pr.cgi?pr=35022
    http://www.iss.net/security_center/static/8485.php
    http://www.openbsd.org/cgi-bin/cvsweb/src/sys/netinet/tcp_input.c.diff?r1=1.109&r2=1.110
    http://www.osvdb.org/5308
    http://www.securityfocus.com/bid/4309
    ftp://patches.sgi.com/support/free/security/advisories/20030604-01-I
    http://cvsweb.netbsd.org/bsdweb.cgi/syssrc/sys/netinet/tcp_input.c.diff?r1=1.136&r2=1.137
    http://online.securityfocus.com/archive/1/262733
    http://www.FreeBSD.org/cgi/query-pr.cgi?pr=35022
    http://www.iss.net/security_center/static/8485.php
    http://www.openbsd.org/cgi-bin/cvsweb/src/sys/netinet/tcp_input.c.diff?r1=1.109&r2=1.110
    http://www.osvdb.org/5308
    http://www.securityfocus.com/bid/4309

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High