diff options
Diffstat (limited to 'gnu/packages/patches/wpa-supplicant-CVE-2016-4477-pt1.patch')
| -rw-r--r-- | gnu/packages/patches/wpa-supplicant-CVE-2016-4477-pt1.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/gnu/packages/patches/wpa-supplicant-CVE-2016-4477-pt1.patch b/gnu/packages/patches/wpa-supplicant-CVE-2016-4477-pt1.patch new file mode 100644 index 0000000000..507a96e47c --- /dev/null +++ b/gnu/packages/patches/wpa-supplicant-CVE-2016-4477-pt1.patch @@ -0,0 +1,51 @@ +From 73e4abb24a936014727924d8b0b2965edfc117dd Mon Sep 17 00:00:00 2001 +From: Jouni Malinen <jouni@qca.qualcomm.com> +Date: Fri, 4 Mar 2016 18:46:41 +0200 +Subject: [PATCH 2/5] Reject psk parameter set with invalid passphrase + character + +WPA/WPA2-Personal passphrase is not allowed to include control +characters. Reject a passphrase configuration attempt if that passphrase +includes an invalid passphrase. + +This fixes an issue where wpa_supplicant could have updated the +configuration file psk parameter with arbitrary data from the control +interface or D-Bus interface. While those interfaces are supposed to be +accessible only for trusted users/applications, it may be possible that +an untrusted user has access to a management software component that +does not validate the passphrase value before passing it to +wpa_supplicant. + +This could allow such an untrusted user to inject up to 63 characters of +almost arbitrary data into the configuration file. Such configuration +file could result in wpa_supplicant trying to load a library (e.g., +opensc_engine_path, pkcs11_engine_path, pkcs11_module_path, +load_dynamic_eap) from user controlled location when starting again. +This would allow code from that library to be executed under the +wpa_supplicant process privileges. + +Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com> +--- + wpa_supplicant/config.c | 6 ++++++ + 1 file changed, 6 insertions(+) + +diff --git a/wpa_supplicant/config.c b/wpa_supplicant/config.c +index b1c7870..fdd9643 100644 +--- a/wpa_supplicant/config.c ++++ b/wpa_supplicant/config.c +@@ -478,6 +478,12 @@ static int wpa_config_parse_psk(const struct parse_data *data, + } + wpa_hexdump_ascii_key(MSG_MSGDUMP, "PSK (ASCII passphrase)", + (u8 *) value, len); ++ if (has_ctrl_char((u8 *) value, len)) { ++ wpa_printf(MSG_ERROR, ++ "Line %d: Invalid passphrase character", ++ line); ++ return -1; ++ } + if (ssid->passphrase && os_strlen(ssid->passphrase) == len && + os_memcmp(ssid->passphrase, value, len) == 0) { + /* No change to the previously configured value */ +-- +1.9.1 + |