From: Lars Immisch Date: Tue, 30 Jan 2007 22:24:57 +0000 (-0800) Subject: [NETFILTER]: SIP conntrack: fix skipping over user info in SIP headers X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=7da5bfbb12e327b3a347ee3e076957cd6564eb56;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git [NETFILTER]: SIP conntrack: fix skipping over user info in SIP headers When trying to skip over the username in the Contact header, stop at the end of the line if no @ is found to avoid mangling following headers. We don't need to worry about continuation lines because we search inside a SIP URI. Fixes Netfilter Bugzilla #532. Signed-off-by: Lars Immisch Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- diff --git a/net/ipv4/netfilter/ip_conntrack_sip.c b/net/ipv4/netfilter/ip_conntrack_sip.c index 3a26d63eed88..571d27e20910 100644 --- a/net/ipv4/netfilter/ip_conntrack_sip.c +++ b/net/ipv4/netfilter/ip_conntrack_sip.c @@ -283,8 +283,14 @@ static int skp_epaddr_len(const char *dptr, const char *limit, int *shift) { int s = *shift; - for (; dptr <= limit && *dptr != '@'; dptr++) + /* Search for @, but stop at the end of the line. + * We are inside a sip: URI, so we don't need to worry about + * continuation lines. */ + while (dptr <= limit && + *dptr != '@' && *dptr != '\r' && *dptr != '\n') { (*shift)++; + dptr++; + } if (*dptr == '@') { dptr++; diff --git a/net/netfilter/nf_conntrack_sip.c b/net/netfilter/nf_conntrack_sip.c index eb2a2411f97b..c93fb37a54fc 100644 --- a/net/netfilter/nf_conntrack_sip.c +++ b/net/netfilter/nf_conntrack_sip.c @@ -303,8 +303,14 @@ static int skp_epaddr_len(struct nf_conn *ct, const char *dptr, { int s = *shift; - for (; dptr <= limit && *dptr != '@'; dptr++) + /* Search for @, but stop at the end of the line. + * We are inside a sip: URI, so we don't need to worry about + * continuation lines. */ + while (dptr <= limit && + *dptr != '@' && *dptr != '\r' && *dptr != '\n') { (*shift)++; + dptr++; + } if (*dptr == '@') { dptr++;