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author | Fan Xin <fan.xin@jp.fujitsu.com> | 2015-08-05 11:41:32 +0900 |
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committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2015-08-09 00:12:44 -0700 |
commit | ce16e95de05db24e4e4132660d793cc7b1d890b9 (patch) | |
tree | d7eb727f4b1d1c23b55841c94e3244c69de6e39f /meta/recipes-connectivity/wpa-supplicant/wpa-supplicant/0004-EAP-pwd-server-Fix-Total-Length-parsing-for-fragment.patch | |
parent | c1df1da2a71aeb5956952e44c5f4ad669b6e770f (diff) | |
download | openembedded-core-contrib-ce16e95de05db24e4e4132660d793cc7b1d890b9.tar.gz |
wpa-supplicant: Fix CVE-2015-4141, CVE-2015-4143, CVE-2015-4144, CVE-2015-4145, CVE-2015-4146
wpa-supplicant: backport patch to fix CVE-2015-4141,
CVE-2015-4143, CVE-2015-4144, CVE-2015-4145, CVE-2015-4146
Backport patch to fix CVE-2015-4141, CVE-2015-4143, CVE-2015-4144, CVE-2015-4145, CVE-2015-4146.
This patch is originally from:
For CVE-2015-4141:
http://w1.fi/security/2015-2/0001-WPS-Fix-HTTP-chunked-transfer-encoding-parser.patch
For CVE-2015-4143:
http://w1.fi/security/2015-4/0001-EAP-pwd-peer-Fix-payload-length-validation-for-Commi.patch
http://w1.fi/security/2015-4/0002-EAP-pwd-server-Fix-payload-length-validation-for-Com.patch
For CVE-2015-4144 and CVE-2015-4145:
http://w1.fi/security/2015-4/0003-EAP-pwd-peer-Fix-Total-Length-parsing-for-fragment-r.patch
http://w1.fi/security/2015-4/0004-EAP-pwd-server-Fix-Total-Length-parsing-for-fragment.patch
For CVE-2015-4146:
http://w1.fi/security/2015-4/0005-EAP-pwd-peer-Fix-asymmetric-fragmentation-behavior.patch
Signed-off-by: Fan Xin <fan.xin at jp.fujitsu.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/recipes-connectivity/wpa-supplicant/wpa-supplicant/0004-EAP-pwd-server-Fix-Total-Length-parsing-for-fragment.patch')
-rw-r--r-- | meta/recipes-connectivity/wpa-supplicant/wpa-supplicant/0004-EAP-pwd-server-Fix-Total-Length-parsing-for-fragment.patch | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/meta/recipes-connectivity/wpa-supplicant/wpa-supplicant/0004-EAP-pwd-server-Fix-Total-Length-parsing-for-fragment.patch b/meta/recipes-connectivity/wpa-supplicant/wpa-supplicant/0004-EAP-pwd-server-Fix-Total-Length-parsing-for-fragment.patch new file mode 100644 index 0000000000..a4c02b4745 --- /dev/null +++ b/meta/recipes-connectivity/wpa-supplicant/wpa-supplicant/0004-EAP-pwd-server-Fix-Total-Length-parsing-for-fragment.patch @@ -0,0 +1,54 @@ +Upstream-Status: Backport + +Signed-off-by: Fan Xin <fan.xin@jp.fujitsu.com> + +From 3035cc2894e08319b905bd6561e8bddc8c2db9fa Mon Sep 17 00:00:00 2001 +From: Jouni Malinen <j@w1.fi> +Date: Sat, 2 May 2015 19:26:06 +0300 +Subject: [PATCH 4/5] EAP-pwd server: Fix Total-Length parsing for fragment + reassembly + +The remaining number of bytes in the message could be smaller than the +Total-Length field size, so the length needs to be explicitly checked +prior to reading the field and decrementing the len variable. This could +have resulted in the remaining length becoming negative and interpreted +as a huge positive integer. + +In addition, check that there is no already started fragment in progress +before allocating a new buffer for reassembling fragments. This avoid a +potential memory leak when processing invalid message. + +Signed-off-by: Jouni Malinen <j@w1.fi> +--- + src/eap_server/eap_server_pwd.c | 10 ++++++++++ + 1 file changed, 10 insertions(+) + +diff --git a/src/eap_server/eap_server_pwd.c b/src/eap_server/eap_server_pwd.c +index 3189105..2bfc3c2 100644 +--- a/src/eap_server/eap_server_pwd.c ++++ b/src/eap_server/eap_server_pwd.c +@@ -942,11 +942,21 @@ static void eap_pwd_process(struct eap_sm *sm, void *priv, + * the first fragment has a total length + */ + if (EAP_PWD_GET_LENGTH_BIT(lm_exch)) { ++ if (len < 2) { ++ wpa_printf(MSG_DEBUG, ++ "EAP-pwd: Frame too short to contain Total-Length field"); ++ return; ++ } + tot_len = WPA_GET_BE16(pos); + wpa_printf(MSG_DEBUG, "EAP-pwd: Incoming fragments, total " + "length = %d", tot_len); + if (tot_len > 15000) + return; ++ if (data->inbuf) { ++ wpa_printf(MSG_DEBUG, ++ "EAP-pwd: Unexpected new fragment start when previous fragment is still in use"); ++ return; ++ } + data->inbuf = wpabuf_alloc(tot_len); + if (data->inbuf == NULL) { + wpa_printf(MSG_INFO, "EAP-pwd: Out of memory to " +-- +1.9.1 + |