FreeBSD memory buffers (mbufs) denial of service

freebsd-mbuf-dos (15369) The risk level is classified as MediumMedium Risk

Description:

FreeBSD is vulnerable to a denial of service, caused by a vulnerability in the memory buffers (mbufs). A remote attacker could send multiple TCP packets in an improper sequence to cause the system to stop processing new connections.


Consequences:

Denial of Service

Remedy:

For FreeBSD:
Upgrade to FreeBSD 4-STABLE or to the appropriate RELENG security branch dated after 2004-03-02, as listed in FreeBSD Security Advisory FreeBSD-SA-04:04.tcp. See References.

— OR —

Apply the appropriate patch for your system, as listed in FreeBSD Security Advisory FreeBSD-SA-04:04.tcp. See References.

For SGI IRIX:
Apply the appropriate patch for your system, as listed in SGI Security Advisory 20040905-01-P. See References.

References:

Platforms Affected:

  • FreeBSD FreeBSD 4.0
  • FreeBSD FreeBSD 5.1
  • SGI IRIX 6.5.22
  • SGI IRIX 6.5.23
  • SGI IRIX 6.5.24
  • SGI IRIX 6.5.25

Reported:

Mar 01, 2004

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