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    CVE-2006-4304

    Buffer overflow in the sppp driver in FreeBSD 4.11 through 6.1, NetBSD 2.0 through 4.0 beta before 20060823, and OpenBSD 3.8 and 3.9 before 20060902 allows remote attackers to cause a denial of service (panic), obtain sensitive information, and possibly execute arbitrary code via crafted Link Control Protocol (LCP) packets with an option length that exceeds the overall length, which triggers the overflow in (1) pppoe and (2) ippp. NOTE: this issue was originally incorrectly reported for the ppp driver.

    Published:Aug 24, 2006
    Last Modified:Apr 16, 2026
    EPS:Aug 24, 2006
    EPSS Score:0.05619
    CVSS Score:10

    Affected Products

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

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-58094 (CVSS 7.8) — The FIOSSHMLPGCNF ioctl(2) operation configures the page size for a largepage shared memory object. This is i…
    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://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2006-019.txt.asc
    http://secunia.com/advisories/21587
    http://secunia.com/advisories/21731
    http://security.FreeBSD.org/advisories/FreeBSD-SA-06:18.ppp.asc
    http://security.FreeBSD.org/patches/SA-06:18/ppp4x.patch
    http://securitytracker.com/id?1016745
    http://www.openbsd.org/errata.html#sppp
    http://www.openbsd.org/errata38.html#sppp
    http://www.securityfocus.com/bid/19684
    https://exchange.xforce.ibmcloud.com/vulnerabilities/28562
    ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2006-019.txt.asc
    http://secunia.com/advisories/21587
    http://secunia.com/advisories/21731
    http://security.FreeBSD.org/advisories/FreeBSD-SA-06:18.ppp.asc
    http://security.FreeBSD.org/patches/SA-06:18/ppp4x.patch
    http://securitytracker.com/id?1016745
    http://www.openbsd.org/errata.html#sppp
    http://www.openbsd.org/errata38.html#sppp
    http://www.securityfocus.com/bid/19684
    https://exchange.xforce.ibmcloud.com/vulnerabilities/28562

    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