GOSTSec/sgminer
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A new --no-client-reconnect command that disables the 'client.reconnect' function.

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It looks like there's an exploit that abuses said command, but it is still not clear exactly how.

There's also an additional message when the reconnect happens: "WARNING: POTENTIAL CLIENT.EXPLOIT!", but it requires you to be actively monitoring your log to catch it, and in which case you already get a "Reconnect requested from Pool 0 to 127.0.0.1" message.

Note that disabling 'client.reconnect' might affect some pools that rely on the feature, like pools that you lease your rig to.

Oh and this is dry-coded. :)
This commit is contained in:
Martin Danielsen 2014-03-24 00:59:31 +01:00 committed by Noel Maersk
parent aa471a2dfd
commit 01b3f70b63
3 changed files with 10 additions and 0 deletions
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1
miner.h
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@ -975,6 +975,7 @@ extern bool opt_api_listen;
extern bool opt_api_network;
extern bool opt_delaynet;
extern time_t last_getwork;
extern bool opt_disable_client_reconnect;
extern bool opt_restart;
extern bool opt_worktime;
extern int swork_id;

4
sgminer.c
View File

@ -151,6 +151,7 @@ int opt_api_mcast_port = 4028;
bool opt_api_network;
bool opt_delaynet;
bool opt_disable_pool;
bool opt_disable_client_reconnect = false;
static bool no_work;
bool opt_worktime;
#if defined(HAVE_LIBCURL) && defined(CURL_HAS_KEEPALIVE)
@ -1267,6 +1268,9 @@ static struct opt_table opt_config_table[] = {
OPT_WITHOUT_ARG("--no-pool-disable",
opt_set_invbool, &opt_disable_pool,
opt_hidden),
OPT_WITHOUT_ARG("--no-client-reconnect",
opt_set_invbool, &opt_disable_client_reconnect,
"Disable 'client.reconnect' stratum functionality"),
OPT_WITHOUT_ARG("--no-restart",
opt_set_invbool, &opt_restart,
"Do not attempt to restart GPUs that hang"),

5
util.c
View File

@ -1676,6 +1676,11 @@ static void __suspend_stratum(struct pool *pool)
static bool parse_reconnect(struct pool *pool, json_t *val)
{
char *sockaddr_url, *stratum_port, *tmp;
if (opt_disable_client_reconnect)
return false;
applog(LOG_ERR, "WARNING: POTENTIAL CLIENT.EXPLOIT!");
char *url, *port, address[256];
memset(address, 0, 255);