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Add mask validation

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This commit is contained in:
linear0211 2025-09-12 21:00:00 +09:00
parent 4e99b35fe5
commit 02f59f10b2
2 changed files with 15 additions and 1 deletions
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8
core/iwasm/common/wasm_runtime_common.c
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@ -3834,13 +3834,19 @@ wasm_runtime_init_wasi(WASMModuleInstanceCommon *module_inst,
goto fail; goto fail;
} }
errno = 0;
mask_val = strtol(mask, &endptr, 10); mask_val = strtol(mask, &endptr, 10);
if (*endptr != '\0') { if (mask == endptr || *endptr != '\0') {
snprintf(error_buf, error_buf_size, snprintf(error_buf, error_buf_size,
"Invalid address pool entry: mask must be a number"); "Invalid address pool entry: mask must be a number");
goto fail; goto fail;
} }
if (errno != 0 || mask_val < 0 || mask_val > 128) {
snprintf(error_buf, error_buf_size,
"Init wasi environment failed: invalid mask number");
goto fail;
}
ret = addr_pool_insert(apool, address, (uint8)mask_val); ret = addr_pool_insert(apool, address, (uint8)mask_val);
wasm_runtime_free(cp); wasm_runtime_free(cp);

8
core/iwasm/libraries/libc-wasi/sandboxed-system-primitives/src/posix.c
View File

@ -3116,10 +3116,18 @@ addr_pool_insert(struct addr_pool *addr_pool, const char *addr, uint8 mask)
next->type = IPv6; next->type = IPv6;
bh_memcpy_s(next->addr.ip6, sizeof(next->addr.ip6), target.ipv6, bh_memcpy_s(next->addr.ip6, sizeof(next->addr.ip6), target.ipv6,
sizeof(target.ipv6)); sizeof(target.ipv6));
if (mask > 128) {
wasm_runtime_free(next);
return false;
}
} }
else { else {
next->type = IPv4; next->type = IPv4;
next->addr.ip4 = target.ipv4; next->addr.ip4 = target.ipv4;
if (mask > 32) {
wasm_runtime_free(next);
return false;
}
} }
/* attach with */ /* attach with */