mirror/freebsd
1
0
Fork 0
mirror of https://git.FreeBSD.org/src.git synced 2024-12-13 10:02:38 +00:00
Code Issues Releases Activity

Relax checking of incoming PPTP GRE packets a bit: ignore a bogus payload

Browse Source 
length field when there's no payload indicated by the header 'S' bit.
This works around semi-brokenness in the Mac OS X PPTP client.
This commit is contained in:
Archie Cobbs 2002-09-14 00:00:49 +00:00
parent 2e4dbbaa93
commit cc78c48a68
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=103308
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
sys/netgraph/ng_pptpgre.c
View File

@ -623,7 +623,7 @@ ng_pptpgre_recv(node_p node, item_p item)
/* Sanity check packet length and GRE header bits */
extralen = m->m_pkthdr.len
- (iphlen + grelen + (u_int16_t)ntohs(gre->length));
- (iphlen + grelen + gre->hasSeq * (u_int16_t)ntohs(gre->length));
if (extralen < 0) {
priv->stats.recvBadGRE++;
goto bad;