!44 Ncat server UDP: do not quit after EOF on STDIN

From: @XWwalker 
Reviewed-by: @gebidelidaye 
Signed-off-by: @gebidelidaye

backport-Ncat-server-UDP-do-not-quit-after-EOF-on-STDIN.-Fixe.patch

@@ -0,0 +1,31 @@
+From d4e769197afccf425ec16dae5faeece72e8a5130 Mon Sep 17 00:00:00 2001
+From: dmiller <dmiller@e0a8ed71-7df4-0310-8962-fdc924857419>
+Date: Thu, 27 Jul 2023 17:31:48 +0000
+Subject: [PATCH] Ncat server UDP: do not quit after EOF on STDIN. Fixes #2685
+
+Conflict: NA
+Reference: https://github.com/nmap/nmap/commit/d4e769197afccf425ec16dae5faeece72e8a5130
+
+diff --git a/ncat/ncat_listen.c b/ncat/ncat_listen.c
+index 3cecb64f8..c307c68c4 100644
+--- a/ncat/ncat_listen.c
++++ b/ncat/ncat_listen.c
+@@ -376,13 +376,13 @@ restart_fd_loop:
+                 } else {
+                     /* Read from stdin and write to all clients. */
+                     rc = read_stdin();
+-                    if (rc == 0) {
++                    if (rc == 0 && type == SOCK_STREAM) {
+                         if (o.proto != IPPROTO_TCP || (o.proto == IPPROTO_TCP && o.sendonly)) {
+                             /* There will be nothing more to send. If we're not
+                                receiving anything, we can quit here. */
+                             return 0;
+                         }
+-                        if (!o.noshutdown && type == SOCK_STREAM) shutdown_sockets(SHUT_WR);
++                        if (!o.noshutdown) shutdown_sockets(SHUT_WR);
+                     }
+                     if (rc < 0)
+                         return 1;
+-- 
+2.33.0
+

nmap.spec

@@ -3,7 +3,7 @@
 Name:           nmap
 Epoch:          2
 Version:        7.94
-Release:        2
+Release:        3
 License:        Nmap
 Summary:        A tool for network discovery and security auditing.
 Requires:       %{name}-ncat = %{epoch}:%{version}-%{release}
@@ -22,6 +22,7 @@ Patch0003:      nmap-replace-sensitive-words.patch
 Patch0004:      backport-upgrade-libpcre-to-PCRE2-10.42.patch
 Patch0005:      backport-remove-nse_pcrelib-from-build.patch
 Patch0006:      backport-nping-fix-out-of-bounds-access.patch
+Patch0007:      backport-Ncat-server-UDP-do-not-quit-after-EOF-on-STDIN.-Fixe.patch
 
 %define pixmap_srcdir zenmap/share/pixmaps
 
@@ -69,6 +70,12 @@ ln -s ncat %{buildroot}%{_bindir}/nc
 %{_mandir}/man1/*.1.gz
 
 %changelog
+* Tue Sep 12 2023 xingwei <xingwei14@h-partners.com> - 2:7.94-3
+- Type:bugfix
+- CVE:
+- SUG:NA
+- DESC:Ncat server UDP: do not quit after EOF on STDIN
+
 * Wed Aug 23 2023 xingwei <xingwei14@h-partners.com> - 2:7.94-2
 - Type:bugfix
 - CVE: