diff options
Diffstat (limited to 'gnu/packages/patches/wpa-supplicant-CVE-2016-4476.patch')
| -rw-r--r-- | gnu/packages/patches/wpa-supplicant-CVE-2016-4476.patch | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/gnu/packages/patches/wpa-supplicant-CVE-2016-4476.patch b/gnu/packages/patches/wpa-supplicant-CVE-2016-4476.patch new file mode 100644 index 0000000000..acad6be0a4 --- /dev/null +++ b/gnu/packages/patches/wpa-supplicant-CVE-2016-4476.patch @@ -0,0 +1,82 @@ +From ecbb0b3dc122b0d290987cf9c84010bbe53e1022 Mon Sep 17 00:00:00 2001 +From: Jouni Malinen <jouni@qca.qualcomm.com> +Date: Fri, 4 Mar 2016 17:20:18 +0200 +Subject: [PATCH 1/5] WPS: Reject a Credential with invalid passphrase + +WPA/WPA2-Personal passphrase is not allowed to include control +characters. Reject a Credential received from a WPS Registrar both as +STA (Credential) and AP (AP Settings) if the credential is for WPAPSK or +WPA2PSK authentication type and includes an invalid passphrase. + +This fixes an issue where hostapd or wpa_supplicant could have updated +the configuration file PSK/passphrase parameter with arbitrary data from +an external device (Registrar) that may not be fully trusted. Should +such data include a newline character, the resulting configuration file +could become invalid and fail to be parsed. + +Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com> +--- + src/utils/common.c | 12 ++++++++++++ + src/utils/common.h | 1 + + src/wps/wps_attr_process.c | 10 ++++++++++ + 3 files changed, 23 insertions(+) + +diff --git a/src/utils/common.c b/src/utils/common.c +index 450e2c6..27b7c02 100644 +--- a/src/utils/common.c ++++ b/src/utils/common.c +@@ -697,6 +697,18 @@ int is_hex(const u8 *data, size_t len) + } + + ++int has_ctrl_char(const u8 *data, size_t len) ++{ ++ size_t i; ++ ++ for (i = 0; i < len; i++) { ++ if (data[i] < 32 || data[i] == 127) ++ return 1; ++ } ++ return 0; ++} ++ ++ + size_t merge_byte_arrays(u8 *res, size_t res_len, + const u8 *src1, size_t src1_len, + const u8 *src2, size_t src2_len) +diff --git a/src/utils/common.h b/src/utils/common.h +index 701dbb2..a972240 100644 +--- a/src/utils/common.h ++++ b/src/utils/common.h +@@ -488,6 +488,7 @@ const char * wpa_ssid_txt(const u8 *ssid, size_t ssid_len); + + char * wpa_config_parse_string(const char *value, size_t *len); + int is_hex(const u8 *data, size_t len); ++int has_ctrl_char(const u8 *data, size_t len); + size_t merge_byte_arrays(u8 *res, size_t res_len, + const u8 *src1, size_t src1_len, + const u8 *src2, size_t src2_len); +diff --git a/src/wps/wps_attr_process.c b/src/wps/wps_attr_process.c +index eadb22f..e8c4579 100644 +--- a/src/wps/wps_attr_process.c ++++ b/src/wps/wps_attr_process.c +@@ -229,6 +229,16 @@ static int wps_workaround_cred_key(struct wps_credential *cred) + cred->key_len--; + #endif /* CONFIG_WPS_STRICT */ + } ++ ++ ++ if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK) && ++ (cred->key_len < 8 || has_ctrl_char(cred->key, cred->key_len))) { ++ wpa_printf(MSG_INFO, "WPS: Reject credential with invalid WPA/WPA2-Personal passphrase"); ++ wpa_hexdump_ascii_key(MSG_INFO, "WPS: Network Key", ++ cred->key, cred->key_len); ++ return -1; ++ } ++ + return 0; + } + +-- +1.9.1 + |