1 files changed, 99 insertions, 0 deletions

diff --git a/debian/patches/debian-banner.patch b/debian/patches/debian-banner.patch
new file mode 100644
index 000000000..e608bd20d
--- /dev/null
+++ b/debian/patches/debian-banner.patch
@@ -0,0 +1,99 @@
+Description: Add DebianBanner server configuration option
+ Setting this to "no" causes sshd to omit the Debian revision from its
+ initial protocol handshake, for those scared by package-versioning.patch.
+Author: Kees Cook <kees@debian.org>
+Bug-Debian: http://bugs.debian.org/562048
+Forwarded: not-needed
+Last-Update: 2010-02-28
+
+Index: b/servconf.c
+===================================================================
+--- a/servconf.c
++++ b/servconf.c
+@@ -135,6 +135,7 @@
+        options->zero_knowledge_password_authentication = -1;
+        options->revoked_keys_file = NULL;
+        options->trusted_user_ca_keys = NULL;
++       options->debian_banner = -1;
+ }
+ 
+ void
+@@ -277,6 +278,8 @@
+                options->permit_tun = SSH_TUNMODE_NO;
+        if (options->zero_knowledge_password_authentication == -1)
+                options->zero_knowledge_password_authentication = 0;
++       if (options->debian_banner == -1)
++               options->debian_banner = 1;
+ 
+        /* Turn privilege separation on by default */
+        if (use_privsep == -1)
+@@ -325,6 +328,7 @@
+        sUsePrivilegeSeparation, sAllowAgentForwarding,
+        sZeroKnowledgePasswordAuthentication, sHostCertificate,
+        sRevokedKeys, sTrustedUserCAKeys,
++       sDebianBanner,
+        sDeprecated, sUnsupported
+ } ServerOpCodes;
+ 
+@@ -457,6 +461,7 @@
+        { "hostcertificate", sHostCertificate, SSHCFG_GLOBAL },
+        { "revokedkeys", sRevokedKeys, SSHCFG_ALL },
+        { "trustedusercakeys", sTrustedUserCAKeys, SSHCFG_ALL },
++       { "debianbanner", sDebianBanner, SSHCFG_GLOBAL },
+        { NULL, sBadOption, 0 }
+ };
+ 
+@@ -1386,6 +1391,10 @@
+                charptr = &options->revoked_keys_file;
+                goto parse_filename;
+ 
++       case sDebianBanner:
++               intptr = &options->debian_banner;
++               goto parse_int;
++
+        case sDeprecated:
+                logit("%s line %d: Deprecated option %s",
+                    filename, linenum, arg);
+Index: b/servconf.h
+===================================================================
+--- a/servconf.h
++++ b/servconf.h
+@@ -157,6 +157,8 @@
+ 
+        int     num_permitted_opens;
+ 
++       int     debian_banner;
++
+        char   *chroot_directory;
+        char   *revoked_keys_file;
+        char   *trusted_user_ca_keys;
+Index: b/sshd.c
+===================================================================
+--- a/sshd.c
++++ b/sshd.c
+@@ -422,7 +422,8 @@
+                minor = PROTOCOL_MINOR_1;
+        }
+        snprintf(buf, sizeof buf, "SSH-%d.%d-%.100s%s", major, minor,
+-           SSH_RELEASE, newline);
++           options.debian_banner ? SSH_RELEASE : SSH_RELEASE_MINIMUM,
++           newline);
+        server_version_string = xstrdup(buf);
+ 
+        /* Send our protocol version identification. */
+Index: b/sshd_config.5
+===================================================================
+--- a/sshd_config.5
++++ b/sshd_config.5
+@@ -295,6 +295,11 @@
+ .Dq no .
+ The default is
+ .Dq delayed .
++.It Cm DebianBanner
++Specifies whether the distribution-specified extra version suffix is
++included during initial protocol handshake.
++The default is
++.Dq yes .
+ .It Cm DenyGroups
+ This keyword can be followed by a list of group name patterns, separated
+ by spaces.