From 115c4194d63974dd83b8fbbd69a623f7ae88b313 Mon Sep 17 00:00:00 2001 From: yannayl Date: Fri, 7 Aug 2020 03:20:30 +0300 Subject: [PATCH] Accept Malformed Windows Success Message (#156) Windows Server 2019 skip a space when sending a success message. This commit accepts such a malformed message and continues normally. Signed-off-by: Yannay Linveh Signed-off-by: yannayl --- pppd/chap_ms.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/pppd/chap_ms.c b/pppd/chap_ms.c index 1de5042..ffb6bd1 100644 --- a/pppd/chap_ms.c +++ b/pppd/chap_ms.c @@ -423,6 +423,8 @@ chapms2_check_success(int id, unsigned char *msg, int len) len -= MS_AUTH_RESPONSE_LENGTH; if ((len >= 3) && !strncmp((char *)msg, " M=", 3)) { msg += 3; /* Eat the delimiter */ + } else if ((len >= 2) && !strncmp((char *)msg, "M=", 2)) { + msg += 2; /* Eat the delimiter */ } else if (len) { /* Packet has extra text which does not begin " M=" */ error("MS-CHAPv2 Success packet is badly formed."); -- 2.39.2