upstream/opnsense-src
1
0
Fork 0
mirror of https://github.com/opnsense/src.git synced 2026-06-10 01:00:30 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

MAXHOSTNAMELEN includes space for the NUL

Browse source 
Don't read past the end of the host passed to realhostname()

Not objected to by: freebsd-audit
Interface disliked by: imp
This commit is contained in:
Brian Somers 2001-03-14 20:50:52 +00:00
parent 3bd07cfd43
commit ec86eec797
1 changed files with 4 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
lib/libutil/realhostname.c
View file

@ -52,7 +52,7 @@ struct sockinet {
int
realhostname(char *host, size_t hsize, const struct in_addr *ip)
{
char trimmed[MAXHOSTNAMELEN+1];
char trimmed[MAXHOSTNAMELEN];
int result;
struct hostent *hp;
@ -136,15 +136,15 @@ realhostname_sa(char *host, size_t hsize, struct sockaddr *addr, int addrlen)
freeaddrinfo(ores);
goto numeric;
}
strncpy(buf, ores->ai_canonname,
strlcpy(buf, ores->ai_canonname,
sizeof(buf));
trimdomain(buf, hsize);
strncpy(host, buf, hsize);
if (strlen(host) > hsize &&
if (strlen(buf) > hsize &&
addr->sa_family == AF_INET) {
freeaddrinfo(ores);
goto numeric;
}
strncpy(host, buf, hsize);
break;
}
((struct sockinet *)addr)->si_port = port;