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| author | Mark H Weaver <mhw@netris.org> | 2015-11-11 07:43:12 -0500 |
|---|---|---|
| committer | Mark H Weaver <mhw@netris.org> | 2015-11-11 07:45:11 -0500 |
| commit | 419630e0bec46b9cb33047dea1662df0c400ade3 (patch) | |
| tree | 585a136efc3f6af5be8ffe95435ccb96f59d58e7 /gnu/packages/patches/wpa-supplicant-CVE-2015-5314.patch | |
| parent | 875b2f3d5e7c04176239d16c1832543f315cbf91 (diff) | |
| download | guix-419630e0bec46b9cb33047dea1662df0c400ade3.tar.gz | |
gnu: wpa-supplicant: Add fixes for CVE-2015-{5310,5314,5315,5316}.
* gnu/packages/patches/wpa-supplicant-CVE-2015-5310.patch, gnu/packages/patches/wpa-supplicant-CVE-2015-5314.patch, gnu/packages/patches/wpa-supplicant-CVE-2015-5315.patch, gnu/packages/patches/wpa-supplicant-CVE-2015-5316.patch: New files. * gnu-system.am (dist_patch_DATA): Add them. * gnu/packages/admin.scm (wpa-supplicant-minimal)[source]: Add patches.
Diffstat (limited to 'gnu/packages/patches/wpa-supplicant-CVE-2015-5314.patch')
| -rw-r--r-- | gnu/packages/patches/wpa-supplicant-CVE-2015-5314.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/gnu/packages/patches/wpa-supplicant-CVE-2015-5314.patch b/gnu/packages/patches/wpa-supplicant-CVE-2015-5314.patch new file mode 100644 index 0000000000..bfc4c74e95 --- /dev/null +++ b/gnu/packages/patches/wpa-supplicant-CVE-2015-5314.patch @@ -0,0 +1,51 @@ +From bef802ece03f9ae9d52a21f0cf4f1bc2c5a1f8aa Mon Sep 17 00:00:00 2001 +From: Jouni Malinen <j@w1.fi> +Date: Sun, 1 Nov 2015 18:24:16 +0200 +Subject: [PATCH] EAP-pwd server: Fix last fragment length validation + +All but the last fragment had their length checked against the remaining +room in the reassembly buffer. This allowed a suitably constructed last +fragment frame to try to add extra data that would go beyond the buffer. +The length validation code in wpabuf_put_data() prevents an actual +buffer write overflow from occurring, but this results in process +termination. (CVE-2015-5314) + +Signed-off-by: Jouni Malinen <j@w1.fi> +--- + src/eap_server/eap_server_pwd.c | 6 +++--- + 1 file changed, 3 insertions(+), 3 deletions(-) + +diff --git a/src/eap_server/eap_server_pwd.c b/src/eap_server/eap_server_pwd.c +index cb83ff7..9f787ab 100644 +--- a/src/eap_server/eap_server_pwd.c ++++ b/src/eap_server/eap_server_pwd.c +@@ -970,7 +970,7 @@ static void eap_pwd_process(struct eap_sm *sm, void *priv, + /* + * the first and all intermediate fragments have the M bit set + */ +- if (EAP_PWD_GET_MORE_BIT(lm_exch)) { ++ if (EAP_PWD_GET_MORE_BIT(lm_exch) || data->in_frag_pos) { + if ((data->in_frag_pos + len) > wpabuf_size(data->inbuf)) { + wpa_printf(MSG_DEBUG, "EAP-pwd: Buffer overflow " + "attack detected! (%d+%d > %d)", +@@ -981,6 +981,8 @@ static void eap_pwd_process(struct eap_sm *sm, void *priv, + } + wpabuf_put_data(data->inbuf, pos, len); + data->in_frag_pos += len; ++ } ++ if (EAP_PWD_GET_MORE_BIT(lm_exch)) { + wpa_printf(MSG_DEBUG, "EAP-pwd: Got a %d byte fragment", + (int) len); + return; +@@ -990,8 +992,6 @@ static void eap_pwd_process(struct eap_sm *sm, void *priv, + * buffering fragments so that's how we know it's the last) + */ + if (data->in_frag_pos) { +- wpabuf_put_data(data->inbuf, pos, len); +- data->in_frag_pos += len; + pos = wpabuf_head_u8(data->inbuf); + len = data->in_frag_pos; + wpa_printf(MSG_DEBUG, "EAP-pwd: Last fragment, %d bytes", +-- +1.9.1 + |