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Merge branch 'bugfix/fix_ble_security_issue_2025_v6.0' into 'release/v6.0'

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Fix potential CVE-2024-0039 out-of-bounds write in attp_build_value_cmd (v6.0)

See merge request espressif/esp-idf!43808
This commit is contained in:
Island
2025-12-18 10:57:44 +08:00
parent b890d0870c 5f02ee484e
commit 4af7054b75
30 changed files with 480 additions and 127 deletions
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examples/bluetooth/blufi/main/blufi_security.c
+8
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@@ -41,6 +41,7 @@
struct blufi_security {
#define DH_SELF_PUB_KEY_LEN 128
#define DH_PARAM_LEN_MAX 1024
uint8_t self_public_key[DH_SELF_PUB_KEY_LEN];
#define SHARE_KEY_LEN 128
uint8_t share_key[SHARE_KEY_LEN];
@@ -83,6 +84,13 @@ void blufi_dh_negotiate_data_handler(uint8_t *data, int len, uint8_t **output_da
switch (type) {
case SEC_TYPE_DH_PARAM_LEN:
blufi_sec->dh_param_len = ((data[1]<<8)|data[2]);
// Security fix: Limit DH param length to prevent DoS via large memory allocation
if (blufi_sec->dh_param_len == 0 || blufi_sec->dh_param_len > DH_PARAM_LEN_MAX) {
BLUFI_ERROR("%s, invalid dh param len %d\n", __func__, blufi_sec->dh_param_len);
blufi_sec->dh_param_len = 0;
btc_blufi_report_error(ESP_BLUFI_DH_PARAM_ERROR);
return;
}
if (blufi_sec->dh_param) {
free(blufi_sec->dh_param);
blufi_sec->dh_param = NULL;