socket: Prevent buffer under-read in nxt_inet_addr()

This was found via ASan.

Given a listener address like ":" (or any address where the first
character is a colon) we can end up under-reading the addr->start
buffer here

  if (nxt_slow_path(*(buf + length - 1) == '.')) {

due to length (essentially the position of the ":" in the string) being
0.

Seeing as any address that starts with a ":" is invalid Unit config
wise, we should simply reject the address if length == 0 in
nxt_sockaddr_inet_parse().

Link: <https://clang.llvm.org/docs/AddressSanitizer.html>
Signed-off-by: Arjun <pkillarjun@protonmail.com>
[ Commit message - Andrew ]
Signed-off-by: Andrew Clayton <a.clayton@nginx.com>

0 files changed, 0 insertions, 0 deletions