Feb 13, 1974 - TYPE OF REPORT Be PERIOD COVERED. Fino[ Report .... 3.4.3.1 Minimal Value of the Password File. 47. 3.4.3
ESD-TR-74-J93, Vor. II
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MULTICS SECURITY EVALUATION: VULNERABILITY ANALYSIS
Pau r A. Karger, 2Lt, USAF Roger R. Scherr, Major, USAF
June r974
Approved for pubric refease; distribution unfimited.
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INFORMATION SYSTEMS TECHNOLOGY APPLICATIONS OFFICE DEPUTY FOR COMMAND AND MANAGEMENT SYSTEMS ELECTRONIC SYSTEMS DIVISION (AFSC) L. G. HANSCOM AFB, MA OJ730
LEGAL NOTICE
When U.S. Government drawings, specifications or other '
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~XJZ
130
ooo,u
oovp, $TlfEKIIT 1 01
~~~~
1~~
,,
-
--~----
o,ql
spJ'78 1 *
19,41
o,,~
32 1 U IIPIU,*
1PI~0,*2
bpJfll1~
apJ~1?
••t.,.c;:sa
11Ptt6,• ~92
epi~·
sp 1100
tP! ;z, c:
•PI~O?
-22,1c;;
6 000114 ,'701 20 11 ooo$11 U6 1 ao • 00,46 '7561 20
eaplp
spf36,•
Ufl
lpf~S,• liP I ,o~,•
0 00631 7101 00
tra
aptiiO?
0 OOU1 lJ101 00
tfa
APII609
~hec~S4t¥~ce-~n4ex
~JII
-
9
•o• tra
IJP riOCIDUJI
STAilftiiT 1 OJ
-
5' 1 ,4;1.
6 oo116 Ulf1 ao 777152 'HOO Oil
;J.dq
-
1PI18,*
00 167 ntnn
$flilftiJ! 1 OJ L%1! 132
ooo, .. a
lfAI!ftiJf 1 01 lfAIIftiJT 1 QJ return ~fAtlftiJf 1 OJ retUfn -
~%11
'Jt
~%11
1~'1
~JJI
1110 ··
ooo•u
tn
t,i.a
0001'11l
0001711
1;n
.. ,,,.,1.,
000013
---
-
,..
CO"'PILATION LISTING OF SEGMENT zg Co11p1ted byt Hultlcs Pl/I Coapller, Version II of 30 AUSJUSt 1973. Co!llplled ona 04/10/74 181t3o4 edt Wed Opt lons 1 11ap 1 Zgl
z
proc (dp, wordJ; ~a=•==a•) ; 155
go to check_lnit; 156 ,. .. a 157 call loa_ (f Heft), first+outi-1, data U), data U+U, data U+2)); 151 end; 159 chi cllk..i n 1t a 160 call zg~zf(ptr(Mdsegptr, baseno(segpt~)), save_acc); 1• replace old •ired rin~ access •1 161 i f lnitsw -,. 0 then call hcs_Ster•inate_nona•• Csegptr, code);
162 return;
163
end;
16ft iltl
.
NA'fES DECLARED IN THIS COHPILATION. IOE.,.TIFIER
OFFSET
LOC STORAGE Cl.ASS
DATA TYPE
ATTRIIlUTES AND REFERENCES
bit 16)
NAHES DECLAR~ D BY DECLARE STATEMENT •
eount
000034 constant OOOUit autoaet ic
entry fixed
cu_sarg_pt,. cv_oet_cheelir.. data
000052 constant 000032 constant 000115 auto•tlc
entry entry fixed blnU7,0)
datap d1rnaH dHg Qeg_word enaaa error_table ..lno~g arrpr_table.,.l se SJI\.nown
002120 autoaatlc 002121t autoaatlc: 002206 autoaatlc: based 002176 autoaat lc 000026 external static
pointer char 1161) struc:t~o~re b~t U6)
Ch.. rC32J fixed blnU7,0)
level 2 pac;kad un'llgned del 30 .sat ref 110 Ult array del 7 sat ref 126 hvel 2 pae!Jed una.Ugned del 30 set ref 118 del 7 set ref 118 120 120 de I 7 set ret lt3 ltlt 52 53 54 61 62 &It .&& 67 68 1 &9 81 82 87 88 93 94 95 96 JDZ 161 uterna 1 de·l 7 ref Sit 71 del 7 set ret 84 94 95 120 120 '120 121t 125 11t7 11t8 external del 7 ref 43 52 81 93 external del 7 ref 61 87 95 at' ray de t 7 sat ,., f 1t1 126 111 111 131 111 .us 152 152 156 ~56 156 de I 7 set raf lt1 unallSinad del 7 sat ra f 66 66 ·6& hva l 1 pac•d dc:J ~0 sat ~ef 10ft 105 111 ,Ui del . 7 set raf '10ft 1115 111 Ui unallanad del 7 sat rat 66 66 ;6a del 1 rat ~It 12 9ft
000030 000051t 000010 000101t 000044
fixed blnC17,0J entry char C16J fixed b1nC17,0J entry
del 7 rat 69 external del 1 ref && initial array del 7 set raf 156 del 7 sat raf 83 87 120 ~20 126 131 156 external del 7 ref 68 external del 7 ref 161 del 1 set ref 61 73 127 131 131 131 131 135 115 11t0 140 1_52 152 ..156 156 1~6 del 7 set ref ItO 70 161 external del 7 raf 45 89 97 116 111 131 133 15ft 156 . . ' del 7 set ref 121t 125 126 126 1~.9 131 .141 11t3 1 151 156 del 1 ref 51 52 60 81 93 del 1 set ~ef 122 126 146 1~ del 7 s•t ref 123 131 142 1~ 156 erray del 7 set rat 126 126 laval 2 pJte~ed \maligned del 30 level 2 packed unatlgned del 30 del 1 set ref 117 117 111 external del 7 raf &It 102 del 37 set ref .115 159 del 7 set ref 63 64 65 68 73 76 104 10ft 115 115 116 116 126 159 159 161 i•v•i 2-, packed unaligned del 30 sat ref 117 unaligned del 7 sat ref 50 50 61 64 87 19 9S·t7 del 1 set rat lt3 4ft 50 50_52 61 61 &It &It ~6 11 87 87 89 89 93 94 95 95 .97 97. Ult 135 135 151 1 152 lie I 7 set ref 128 U1 133 117 137 139 154 de I 7 set ref lt3 50 50 52 61 &It 66 81 87 :89 91 97
aee bdllta bnd
bound code
COli_.,.,._
exPand_path_ f
.....
"'
U1
ttr.tt hes_S1n1thta hcs_ataralnata_nona. .
0130) 00220& autoRtic based 0(19) 002206 autoutlc OOOU3 autoaatic 00010 0 autoaatlc
external static constant internal static autoaetlc constant
blt (3£,) blt (8) fixed blnU7,0) fixed binC17,0) ~lnC35,
0)
l
000042 constant 000102 autoaatie
antry fixed b.lnC17,0J
lnltsw loa_
00010 5 autoaat lc 000036 constant
fhaa blnC17,0J entry
·laft
000111 autoutlc
fixed blnU7,Q)
naxt_arg off sat outl ovarlay pad~
Qtdl PLSIZe rlngG_...gat ..sse gp:tr save_acc sagptr slze targ tc
the_.... tp
autout le auto. .tle autoaiitle based auto.atle auto•atlc autoaat le constant autoaiat lc auto11at1c
flxad blnU7,0) flxad blnC17,U fllcad blnU1,0J blt C3&) blt (19) blt C2J fixed blnU7,0J an try bltCJ&) pointer
0(27i GGZZGv al.itor;;atie
based. 000103 autoaat1c
bit ( :i.i c:her fixed blnC17,0)
000106 autoaatlc 002116 autoaat lc
flxed blnC17,0) pointer
000107 000110 oob101 ·· 002206 0128) 002206 000112 000040 002207 002122
••t
,7
--·
--·
4ft~
44~
44·~
44,
•• ,
4~Q
4&Q
,..
Ztl~f
00004& constant
entry
·external del 7 ret 116 159
NAMES DECLARE 0 8'f DECLARE STATEMENT AND NEVER REFERENCED.
condition_ 000000 constant entry SM auto•niltlc thea blnU7,0) NAMES DECI.AR:: 0 BY EXPLICIT CONTEXT.
bad_count 000736 0011t63 chec"-lnl t different 001341 get_bound 00077 o get_neaa 000327 001175 IOOQ alssing 000250 0011t24 r•• sklp 001342 000114 zd
externa I de I 7
lie I 7
la~el
constant constant constant constant constant constant constant constant constant constant
del 97 ref 97 120
del 159 rat 1SS 159
del 139 ref 135 139
del 102 ref IS 112
de 1 63.. rat 57 63
del 12~ rat 124 141
det ~lt.,r•f 54 67 69
del 15~ rat 129 152 156
del 140 rat 138 140
·external del 1 rat 1
label label label la~el
la~el
label label label entry
NAMES DECLAR:: 0 BY CONTEXT OR IMPLICATION.
addr
lntarn11 rat 41'66 66 66 66 Ult 105 1111U U6
126
internal rat 76 1Git 10ft us us 116 U.6 159 159
lnt~~trn•l r-f n 10/t 104
lnt•rnal r:-af 111
internet r.af 63 65
lntarna.l r.af 10' 104 115 US 116 116 126 1H 119
internal rat 110
buUtln function
aaeuno
bulltln bulttln bull U n bull tl n bullt1 n bulttln
._.,ptr
Uxad nult ptr substr
function function function tunctlon function function
STORAGE REQUI RElENTS FOR TliiS PROGRAM.
""""'
0>
Start IAngth Exttrnal
ObJ act 0 2124 pr~adu-a
Tut 0 1516
Un~
1656 56
Syabol 1734 156
Static
1&66
46
Oats 1516 140
za uses 1254 words of autoaatlc storage
THE FOLLOMitG EXTERNAL OPERATORS ARE USED BY THIS PROGRAM.
r -•-•• cp~cs ea ll_axt_out_dasc catl_axt_out copy_Mord$ ext _entry rpd_l oop_1.... 1P_bp
THE.FOLLOMitG EXTERNAL ENTRIES ARE CALLED BY THIS PROGRAM.
eo~~_arr_ eu_sarg_ptr hcs_llnl tlatl hcs_ste r alna t a_no na ae zg ZSJIZf
set_csa
return
cv_~et_enaek_
expand_path_
rlnSJO-iat_lsegptr
loa_
>#
THE FOLLOWING EXTERNAL VARIABLES ARE USED BY THIS PROGRAM.
error_table_S noar- 51 error_table_-sse§lknown
LINE LilC 1 000113 so 00017 2 611 00.0271 &7 00041 s 78 00047 7 57 0005'1) 2
LINE ItO $1 61 68 79 88
I. oc 000121 000225 000273 0001t17 000527 000614
LINE 41 52 62 69 81 89
LOC 000122 000227 000325 000460 000530 000616
LINE 43 53 63 70 82 90
LOC 000124 00021t6 000327 0001t65 000545 00 0647
L.INE 44 54 64 72 83 93
I.OC 00 0143 00 0250 000331 0001tft7 000556 000650
LINE ItS 55 65 73 ... 94
LOC 00015/t 000267 000366 000470 000557 010670
LINE.
L.OC
It& 011111
57.010270 66 000372 76 0001t74 as ooos61 9S 00070/t
·····---·i~
107 117 121t 131 139 148 156
OQ1055 00111t2 00117 5 o:o1a1 0013H 001360 0011t24
110 117 125 133 1lt 0 150 159
0010 56 001150 001203 001303 001342 001362 001463
111 118 126 131t 11t2 151 161
001062 001152 001204 001320 0 01344 001364 001501
112 120 127 135 143 152 162
001103 0011&0 001220 001321t 001345 001372 001511t
111t 120 128 136 11t4 153
00 1101t. 001167 001222 001335 00131t7 00 11t03
115 001106 122 001172 129 OU223 137D013U 11t6 001350 154 0011t05
116 UU21t
121 001173
130 _0 GU 26
ua oou,.o
1At7 '0.013!52
155 0011t23
......., "'
~
APPENDIX E
Patch Utility Listing
This appendix is a listing of a patch utility corresponding to the dump utility in Appendix D. The utility, zp, is based on the installed 14ultics command, patch_ring_zero, documented in the t1£t::1 System Programmers' Supplement . ZP uses the same algorithm as zd in App~ndix D and operates under the same restrlctions. A sample of its use is shown below~ Lines typed by the user are underlined. ~ ~ ~
123171163101 ~!22151156 660 104162165151 to 123171163101 661 144040040040 to 14415515115G
Type "yes" if patches are correct:
~
As seen above, the command requests the user to confi rrn the patch before actually performing the patch. The patch shown aGave changes the user's project identification from Druid to SysAdmin.
133
C01PILATION LISTING OF SEGHENT zp
C011p! lad byt HuH.lcs PL/1 Coaplter, Version II of 30 August 1973. Ca.plltd ont 04/10/74 1843.6 edt Wed Opt .lonst aap proc;
1 ZPI
z
3 1• This procedure aU oMs pr lvileged users to patch J ocat ions in ring o. If necessary tnt descriptor seg11ent is patched to g1ve access to patch a non-Nr.l te Plrllit seg111nt •1 5 6 7 del ; targ char Ctc) based ctp)'
.. s
Cerror_table_snoarg, error_table_ssegknoMn) flKed bln ext, Cc:ode, 1, tc:, f lrst, SM) flxed bin, Csd111p, segptrl ptr stat .lc:, Mdsegptr ptr, get_proc:ess_id_ ext entry returns (bit (3~) aligned), process! d b.lt (36) aUgned, dllta1 COt CJ9J fixed bin statJ.c:, data lOt CJC)l fixed bin C35), overlay CO&c:ount-U b.l t C3DJ aUgned based, count flJc•d bin static, Ctp, datap, dat atpJ ptr, d1 rnaae char C168), ena11e c:har. ·c32 J, c:v_oc:t_ entry Cc:nar c•JJ returns Cflxtd bin C35H, c:v_oct_c:hec~ entry Cchar c•J, fixed bin) returns Cflxed o1n C35J), ringO_get.•segptr entry Ccha.r C•J, c"'r C•), Ptr• fixed blnh Uoa_, loa_snnl) entry optlons Cvar.lable), los_sread_ptr entry Cptr, fixed b.ln, fixed bird, Czg, zgtaU entry Cptr, fixed. bin U5Jh buf.fer char U6J -.ugned, cu_sar~ptr ext entry Cflxed bin, ptr, fixed oln, fixed blnJ, expand..,path_ axt entry Cptr, fixed bin, ptr, ptr, fixe~ bi nJ;
g 1C 11
12 13 14 15
16 17
u
19
20 21 22
n
...
"" ID
21t 25 26 27 28 29 30
u
!2 13 3ft
del ,1 sd• based aligned, 2 pad bit C30J un•l, 2 ace bit C6) una I;
35 dc:l 36 37
u
39 ItO lt1
42 It!
44 45
.., 47 ItS
4CJ 50 51 52 53
.....
save_acc f .lxed b.lnC35J ; datap = addr CdataJ; c:ount 0;
1• get pointer to data area,•/
=
call cu_targ_ptr u, tp, tc, code); 1• plec up the flrst arsa Cna~~t/nullberJ •1 if code a error_t able_snoarg I tc 0 then :to; call loa_ C"prz na.. /segno offset valuel ••• valueo-J; return; end; 1• get seg~~ent nullber •1 1 cv_oct_Chec~ Cterg, codeJI 1• dicn•t ;lve r.~t;~ •1 if code-= 0 then do; segp tr ,. nul I (); 1• 1f nu I 1 U •• •re sUI I in trouble •1 call rlngO_get_ssegptr , .... , terg, sagptr, codeJ; 1• so ••su•e ring 0 neae •1 1f segptr • null · 0 then do; cell loa_ c"-a not fOUld···, tal"g); return; end; end;
=
=
I&
- - - - - · ._ • .__... __
..
a ........,
•1
~
5& 57 58 59 60 61 62
63
&It
n
74
75 76 77 78 79
••
h
.....
=
=
cf lrst
=
1• No• check the access on the seg•ent about to be patched •1
65
66 67 68 69 70 71 72
"'0 "
call cu_sarg_ptr (2, tp, tc, code); 1• p!Ck up £acond erg 1 f code = error_tabh_snoarg I tc 0 then go to •ss; ·
first= cv_oct_ Ctarg);
segptr ptr Csegptr, first);
sciMP ptr Cbaseptr co), baseno CsagptrH;
call rlngO_gat_SSegptrC".. , "wdseg••, Mdsegptr, coda);
dat ap = a ddr cclet a I ;
data1p = adclr (~taU;
catt zg Csdwp, data (0));
1 f data COl = 0 than do;
call loa_ ("pi SOW = 0");
return;
and;
substr Cdatap -> sdw.acc, It, 3) a •100 ..b. then do; call .loa_ C"pl Hester procedUI"ao SON a - ... , data return; and; datap •> s
