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CVE-2012-4561: Fix error handling of try_publickey_from_file().

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This commit is contained in:
Andreas Schneider
2012-10-05 14:56:56 +02:00
parent 46b2eb3c14
commit 455da60846
1 changed files with 6 additions and 6 deletions
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12
src/keyfiles.c
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@@ -1214,7 +1214,7 @@ ssh_string try_publickey_from_file(ssh_session session, struct ssh_keys_struct k
const char *priv;
const char *pub;
char *new;
ssh_string pubkey=NULL;
ssh_string pubkey;
pub = keytab.publickey;
if (pub == NULL) {
@@ -1234,13 +1234,13 @@ ssh_string try_publickey_from_file(ssh_session session, struct ssh_keys_struct k
ssh_log(session, SSH_LOG_PACKET, "Trying to open publickey %s", pub);
if (!ssh_file_readaccess_ok(pub)) {
ssh_log(session, SSH_LOG_PACKET, "Failed to open publickey %s", pub);
goto error;
return NULL;
}
ssh_log(session, SSH_LOG_PACKET, "Trying to open privatekey %s", priv);
if (!ssh_file_readaccess_ok(priv)) {
ssh_log(session, SSH_LOG_PACKET, "Failed to open privatekey %s", priv);
goto error;
return NULL;
}
ssh_log(session, SSH_LOG_PACKET, "Success opening public and private key");
@@ -1255,18 +1255,18 @@ ssh_string try_publickey_from_file(ssh_session session, struct ssh_keys_struct k
"Wasn't able to open public key file %s: %s",
pub,
ssh_get_error(session));
goto error;
return NULL;
}
new = realloc(*privkeyfile, strlen(priv) + 1);
if (new == NULL) {
ssh_string_free(pubkey);
goto error;
return NULL;
}
strcpy(new, priv);
*privkeyfile = new;
error:
return pubkey;
}