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Ensure that memory allocated for the ticket is freed

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If a call to EVP_DecryptUpdate fails then a memory leak could occur.
Ensure that the memory is freed appropriately.

Issue reported by Guido Vranken.

Reviewed-by: Richard Levitte <levitte@openssl.org>
This commit is contained in:
Matt Caswell 2016-03-15 11:38:56 +00:00
parent 4161523ecd
commit d31b25138f
1 changed files with 3 additions and 1 deletions
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4
ssl/t1_lib.c
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@ -2321,8 +2321,10 @@ static int tls_decrypt_ticket(SSL *s, const unsigned char *etick,
p = etick + 16 + EVP_CIPHER_CTX_iv_length(&ctx);
eticklen -= 16 + EVP_CIPHER_CTX_iv_length(&ctx);
sdec = OPENSSL_malloc(eticklen);
if (!sdec || EVP_DecryptUpdate(&ctx, sdec, &slen, p, eticklen) <= 0) {
if (sdec == NULL
|| EVP_DecryptUpdate(&ctx, sdec, &slen, p, eticklen) <= 0) {
EVP_CIPHER_CTX_cleanup(&ctx);
OPENSSL_free(sdec);
return -1;
}
if (EVP_DecryptFinal(&ctx, sdec + slen, &mlen) <= 0) {