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FreeBSD exec() Inherited Signal Handler Vulnerability

Solution:
FreeBSD has released a source code patch and binary kernel upgrade.


FreeBSD FreeBSD 4.0

• FreeBSD (binary kernel upgrade) security-patch-signal-01.42.tgz
  ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/packages/SA-01:42/security-patc h-signal-01.42.tgz

FreeBSD FreeBSD 4.1

• FreeBSD (binary kernel upgrade) security-patch-signal-01.42.tgz
  ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/packages/SA-01:42/security-patc h-signal-01.42.tgz


• FreeBSD signal-4.3.patch
  ftp://ftp.freebsd.org/pub/FreeBSD/CERT/patches/SA-01:42/signal-4.3.pat ch

FreeBSD FreeBSD 4.2

• FreeBSD (binary kernel upgrade) security-patch-signal-01.42.tgz
  ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/packages/SA-01:42/security-patc h-signal-01.42.tgz


• FreeBSD signal-4.3.patch
  ftp://ftp.freebsd.org/pub/FreeBSD/CERT/patches/SA-01:42/signal-4.3.pat ch

FreeBSD FreeBSD 4.3

• FreeBSD (binary kernel upgrade) security-patch-signal-01.42.tgz
  ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/packages/SA-01:42/security-patc h-signal-01.42.tgz


• FreeBSD signal-4.3.patch
  ftp://ftp.freebsd.org/pub/FreeBSD/CERT/patches/SA-01:42/signal-4.3.pat ch