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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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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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