pwnhard

cppub

miptctf

C++ vector iterator invalidation after erase() leads to OOB read. Fake std::string spray converts OOB into arbitrary read (heap leak, libc leak via unsorted bin, stack leak via environ). Tcache poisoning redirects allocation to stack for ROP chain. system('/bin/sh') gives shell. glibc 2.35, no __free_hook.

$ ls tags/ techniques/

heap oob_read cpp pwn iterator_invalidation vector_erase fake_string tcache_poisoning safe_linking_bypass environ_leak stack_rop glibc_2.35 arbitrary_read

iterator_invalidation_oobfake_std_string_arbitrary_readtcache_poisoning_stackenviron_stack_leaksafe_linking_decryptrop_chain_on_stack

Analysis

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$ python3 exploit.py --target 192.168.1.1 --port 8080
[*] Connecting to target...
[+] Shell obtained!

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