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Hi there, |
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On 5/13/05, Pedro Venda <pjvenda@××××××××××××.org> wrote: |
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> hi everyone, |
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> |
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> Has anyone got a clue on how should the proof of concept code behave on |
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> vulnerable and not vulnerable machines? |
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> |
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> On a PaX+grsecurity hardened server, it outputs: |
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> |
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> [+] ./elfcd1 argv_start=0xb47b23d4 argv_end=0xb47b23dc ESP: 0xb47b1890 |
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> [+] phase 1 |
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> [+] AAAA argv_start=0xb5e0442e argv_end=0xb5e04432 ESP: 0xb5e03930 |
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> [+] phase2, <RET> to crash Killed |
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> |
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> and doesn't core-dump. Also it doesn't warn about the segmentation violation |
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> process in the logs... |
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> |
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> On my laptop, a test server and 2 other workstations (standard 2.6.11.5-8 |
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> kernels) results are consistent but different from the hardened server: |
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> pjlv@archon test $ ./elfcd1 |
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> |
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> [+] ./elfcd1 argv_start=0xbfffeff7 argv_end=0xbfffefff ESP: 0xbfffedb0 |
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> [+] phase 1 |
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> [+] AAAA argv_start=0xbfff6fee argv_end=0xbfff6ff2 ESP: 0xbfff6e80 |
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> [+] phase 2, <RET> to crash Segmentation fault (core dumped) |
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> |
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> and core-dumps. |
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> |
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> any help? is the hardened server secure? I suppose so, since it didn't core |
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> dump. |
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> |
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>From what I understood, a core dump doesn't meen the POC worked. |
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But I could be wrong... |
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> regards, |
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> pedro venda. |
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> -- |
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> |
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> Pedro João Lopes Venda |
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> email: pjvenda < at > arrakis.dhis.org |
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> http://arrakis.dhis.org |
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> |
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> |
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> |
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best regards, e abraços pa ti pj! :-p |
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-- |
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Miguel Sousa Filipe |
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-- |
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