Revert "ppp: backport security fixes"

This reverts commit cc78f934a9466a0ef404bb169cc42680c7501d02 since it
didn't contain a reference to the CVE it addresses. The next commit
will re-add the commit including a CVE reference in its commit message.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>

1 files changed, 0 insertions, 61 deletions

diff --git a/package/network/services/ppp/patches/702-pppd-Ignore-received-EAP-messages-when-not-doing-EAP.patch b/package/network/services/ppp/patches/702-pppd-Ignore-received-EAP-messages-when-not-doing-EAP.patch
deleted file mode 100644
index 7286d81a56..0000000000
--- a/package/network/services/ppp/patches/702-pppd-Ignore-received-EAP-messages-when-not-doing-EAP.patch
+++ /dev/null
@@ -1,61 +0,0 @@
-From 8d45443bb5c9372b4c6a362ba2f443d41c5636af Mon Sep 17 00:00:00 2001
-From: Paul Mackerras <paulus@ozlabs.org>
-Date: Mon, 3 Feb 2020 16:31:42 +1100
-Subject: [PATCH] pppd: Ignore received EAP messages when not doing EAP
-
-This adds some basic checks to the subroutines of eap_input to check
-that we have requested or agreed to doing EAP authentication before
-doing any processing on the received packet.  The motivation is to
-make it harder for a malicious peer to disrupt the operation of pppd
-by sending unsolicited EAP packets.  Note that eap_success() already
-has a check that the EAP client state is reasonable, and does nothing
-(apart from possibly printing a debug message) if not.
-
-Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
----
- pppd/eap.c | 18 ++++++++++++++++++
- 1 file changed, 18 insertions(+)
-
-diff --git a/pppd/eap.c b/pppd/eap.c
-index 1b93db01aebd..082e95343120 100644
---- a/pppd/eap.c
-+++ b/pppd/eap.c
-@@ -1328,6 +1328,12 @@ int len;
- 	int fd;
- #endif /* USE_SRP */
- 
-+	/*
-+	 * Ignore requests if we're not open
-+	 */
-+	if (esp->es_client.ea_state <= eapClosed)
-+		return;
-+
- 	/*
- 	 * Note: we update es_client.ea_id *only if* a Response
- 	 * message is being generated.  Otherwise, we leave it the
-@@ -1736,6 +1742,12 @@ int len;
- 	u_char dig[SHA_DIGESTSIZE];
- #endif /* USE_SRP */
- 
-+	/*
-+	 * Ignore responses if we're not open
-+	 */
-+	if (esp->es_server.ea_state <= eapClosed)
-+		return;
-+
- 	if (esp->es_server.ea_id != id) {
- 		dbglog("EAP: discarding Response %d; expected ID %d", id,
- 		    esp->es_server.ea_id);
-@@ -2047,6 +2059,12 @@ u_char *inp;
- int id;
- int len;
- {
-+	/*
-+	 * Ignore failure messages if we're not open
-+	 */
-+	if (esp->es_client.ea_state <= eapClosed)
-+		return;
-+
- 	if (!eap_client_active(esp)) {
- 		dbglog("EAP unexpected failure message in state %s (%d)",
- 		    eap_state_name(esp->es_client.ea_state),