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Fix remotely triggerable assert during ip decryption 

Fixes bug 4410.
This commit is contained in:
Dan Rosenberg 2011-11-06 17:23:14 +01:00 committed by Sebastian Hahn
parent 5d3095152e
commit d5161ab895
1 changed files with 5 additions and 0 deletions
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5
src/or/routerparse.c
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@ -3858,6 +3858,11 @@ rend_decrypt_introduction_points(char **ipos_decrypted,
crypto_cipher_env_t *cipher;
char *dec;
int declen;
if (ipos_encrypted_size < CIPHER_IV_LEN + 2) {
log_warn(LD_REND, "Size of encrypted introduction points is too "
"small.");
return -1;
}
dec = tor_malloc_zero(ipos_encrypted_size - CIPHER_IV_LEN - 1);
cipher = crypto_create_init_cipher(descriptor_cookie, 0);
declen = crypto_cipher_decrypt_with_iv(cipher, dec,