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revision 162 by kumaneko, Wed Mar 28 11:57:56 2007 UTC revision 258 by kumaneko, Sun Jun 3 11:59:44 2007 UTC
# Line 865  Fix 2007/03/07 Line 865  Fix 2007/03/07
865        I replaced some types with 'unsigned int'.        I replaced some types with 'unsigned int'.
866    
867  Version 1.4   2007/04/01   x86_64 support release.  Version 1.4   2007/04/01   x86_64 support release.
868    
869    Fix 2007/04/18
870    
871        @ Change argv[0] checking rule.
872    
873          I was comparing the basename of symbolic link's pathname and argv[0].
874          Since execute permission check and domain transition are done
875          based on realpath while argv[0] check is done based on the symlink's
876          pathname and argv[0], this specification will allow attackers behave
877          as /bin/cat in the domain of /bin/ls if "/bin/ls and /bin/cat are
878          links to /sbin/busybox" and "the attacker is permitted to create
879          a symlink named ~/cat that points to /bin/ls" and "the attacker is
880          permitted to run /bin/ls".
881          So, I changed to compare the basename of realpath and argv[0].
882          Also, I moved the location to compare before processing
883          "aggregator" directive so that
884          "aggregator /tmp/logrotate.\?\?\?\?\?\? /tmp/logrotate.tmp"
885          won't cause the mismatch of the basename of realpath and argv[0].
886    
887          If /bin/ls is a symlink to /sbin/busybox, then
888          creating a symlink named ~/cat that points to /bin/ls and
889          executing ~/cat won't work as expected because permission check and
890          domain transition are done using /sbin/busybox (realpath of /bin/ls)
891          and will be rejected since the administrator won't grant
892          "1 /sbin/busybox".
893    
894    Fix 2007/05/07
895    
896        @ Support pathname subtraction.
897    
898          There was no way to exclude specific pathnames when granting
899          permissions using wildcards.
900          There would be a need to exclude specific files and directories.
901          I introduced "\-" as subtraction operator.
902    
903            "A\-B" means "A" other than "B".
904            "A\-B\-C" means "A" other than "B" and "C".
905            "A\-B\-C\-D" means "A" other than "B" and "C" and "D".
906    
907          "A", "B", "C", "D" may contain wildcards.
908    
909          An example usage is "/home/\*/\*\-.ssh/\*", which means
910          "/home/\*/\*/\*" other than "/home/\*/.ssh/\*".
911    
912          "A" should contain wildcards because subtraction from constants
913          (e.g. "/usr\-usr/" or "/usr\-home/") is meaningless.
914    
915          Don't try "A\-B\+C" because "\+" is not addition operator.
916    
917    Fix 2007/05/24
918    
919        @ Fix autobind hook.
920    
921          The location to call SAKURA_MayAutobind() in net/ipv4/udp.c
922          and net/ipv6/udp.c were wrong.
923    
924    Fix 2007/06/03
925    
926        @ Add a space in MakeMountOptions().
927    
928          I forgot to add a space after "atime" and "noatime".
929    
930    Version 1.4.1 2007/??/??   Minor update release.

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