devel/patch: security fixes

devel/patch/Makefile

@@ -1,6 +1,7 @@
 # $NetBSD: Makefile,v 1.44 2018/03/03 01:31:35 mef Exp $
 
 DISTNAME=	patch-2.7.6
+PKGREVISION=	1
 CATEGORIES=	devel
 MASTER_SITES=   ${MASTER_SITE_GNU:=patch/}
 EXTRACT_SUFX=	.tar.xz
@@ -20,13 +21,6 @@ CONFIGURE_ENV+=		ac_cv_func_setmode_dos=no	# Fix for Interix (and old bsd?)
 
 INSTALLATION_DIRS=	${PKGGNUDIR}bin ${PKGGNUDIR}${PKGMANDIR}/man1
 
-do-patch:
-.for stdhdr in sys/param.h sys/stat.h string.h
-	${ECHO} "#ifdef HAVE_${stdhdr:tu:C,[/.],_,g}" >> ${WRKSRC}/config.hin
-	${ECHO} "#include <${stdhdr}>" >> ${WRKSRC}/config.hin
-	${ECHO} "#endif" >> ${WRKSRC}/config.hin
-.endfor
-
 SYMLINKS	= bin/gpatch ${PKGGNUDIR}bin/patch \
 		man/man1/gpatch.1 ${PKGGNUDIR}${PKGMANDIR}/man1/patch.1
 post-install:

devel/patch/distinfo

@@ -4,3 +4,7 @@ SHA1 (patch-2.7.6.tar.xz) = 6f64fa75993bdb285ac4ed6eca6c9212725bff91
 RMD160 (patch-2.7.6.tar.xz) = 439753620b4d27d606110093d0e586719b8451c3
 SHA512 (patch-2.7.6.tar.xz) = fcca87bdb67a88685a8a25597f9e015f5e60197b9a269fa350ae35a7991ed8da553939b4bbc7f7d3cfd863c67142af403b04165633acbce4339056a905e87fbd
 Size (patch-2.7.6.tar.xz) = 783756 bytes
+SHA1 (patch-config.hin) = 051fc3971575c98830e4a9395425bd792930adc5
+SHA1 (patch-src_pch.c) = 0aed6cd0d64c380767c39908c388c91ddf3003d1
+SHA1 (patch-tests_Makefile.am) = b764e3afd0b421edb9099455fc146077ef707f83
+SHA1 (patch-tests_ed-style) = 7d7c2d04eddaab1d07c05022908a98ef9c984e08

devel/patch/patches/patch-config.hin

@@ -0,0 +1,20 @@
+$NetBSD$
+
+ - Moved from Makefile.
+
+--- config.hin.orig	2018-10-09 04:28:07.759945480 +0000
++++ config.hin
+@@ -2053,3 +2053,13 @@
+
+ /* Define as a macro for copying va_list variables. */
+ #undef va_copy
++
++#ifdef HAVE_SYS_PARAM_H
++#include <sys/param.h>
++#endif
++#ifdef HAVE_SYS_STAT_H
++#include <sys/stat.h>
++#endif
++#ifdef HAVE_STRING_H
++#include <string.h>
++#endif

devel/patch/patches/patch-src_pch.c

@@ -0,0 +1,155 @@
+$NetBSD$
+
+ - fixes: CVE-2018-6951 CVE-2018-6952 CVE-2018-1000156
+
+ - bugs: 53132 53133 53566
+   https://savannah.gnu.org/bugs/index.php?
+
+ - commit ids: f290f48a62 9c986353e4 123eaff0d5
+   https://git.savannah.gnu.org/cgit/patch.git/diff/?id=
+
+--- src/pch.c.orig	2018-10-09 17:01:21.566749708 +0000
++++ src/pch.c
+@@ -33,6 +33,7 @@
+ # include <io.h>
+ #endif
+ #include <safe.h>
++#include <sys/wait.h>
+
+ #define INITHUNKMAX 125			/* initial dynamic allocation size */
+
+@@ -974,7 +975,8 @@ intuit_diff_type (bool need_header, mode
+     if ((pch_rename () || pch_copy ())
+ 	&& ! inname
+ 	&& ! ((i == OLD || i == NEW) &&
+-	      p_name[! reverse] &&
++	      p_name[reverse] && p_name[! reverse] &&
++	      name_is_valid (p_name[reverse]) &&
+ 	      name_is_valid (p_name[! reverse])))
+       {
+ 	say ("Cannot %s file without two valid file names\n", pch_rename () ? "rename" : "copy");
+@@ -2113,7 +2115,7 @@ pch_swap (void)
+     }
+     if (p_efake >= 0) {			/* fix non-freeable ptr range */
+ 	if (p_efake <= i)
+-	    n = p_end - i + 1;
++	    n = p_end - p_ptrn_lines;
+ 	else
+ 	    n = -i;
+ 	p_efake += n;
+@@ -2388,22 +2390,27 @@ do_ed_script (char const *inname, char c
+     static char const editor_program[] = EDITOR_PROGRAM;
+
+     file_offset beginning_of_this_line;
+-    FILE *pipefp = 0;
+     size_t chars_read;
++    FILE *tmpfp = 0;
++    char const *tmpname;
++    int tmpfd;
++    pid_t pid;
+
+-    if (! dry_run && ! skip_rest_of_patch) {
+-	int exclusive = *outname_needs_removal ? 0 : O_EXCL;
+-	assert (! inerrno);
+-	*outname_needs_removal = true;
+-	copy_file (inname, outname, 0, exclusive, instat.st_mode, true);
+-	sprintf (buf, "%s %s%s", editor_program,
+-		 verbosity == VERBOSE ? "" : "- ",
+-		 outname);
+-	fflush (stdout);
+-	pipefp = popen(buf, binary_transput ? "wb" : "w");
+-	if (!pipefp)
+-	  pfatal ("Can't open pipe to %s", quotearg (buf));
+-    }
++    if (! dry_run && ! skip_rest_of_patch)
++      {
++	/* Write ed script to a temporary file.  This causes ed to abort on
++	   invalid commands such as when line numbers or ranges exceed the
++	   number of available lines.  When ed reads from a pipe, it rejects
++	   invalid commands and treats the next line as a new command, which
++	   can lead to arbitrary command execution.  */
++
++	tmpfd = make_tempfile (&tmpname, 'e', NULL, O_RDWR | O_BINARY, 0);
++	if (tmpfd == -1)
++	  pfatal ("Can't create temporary file %s", quotearg (tmpname));
++	tmpfp = fdopen (tmpfd, "w+b");
++	if (! tmpfp)
++	  pfatal ("Can't open stream for file %s", quotearg (tmpname));
++      }
+     for (;;) {
+ 	char ed_command_letter;
+ 	beginning_of_this_line = file_tell (pfp);
+@@ -2414,14 +2421,14 @@ do_ed_script (char const *inname, char c
+ 	}
+ 	ed_command_letter = get_ed_command_letter (buf);
+ 	if (ed_command_letter) {
+-	    if (pipefp)
+-		if (! fwrite (buf, sizeof *buf, chars_read, pipefp))
++	    if (tmpfp)
++		if (! fwrite (buf, sizeof *buf, chars_read, tmpfp))
+ 		    write_fatal ();
+ 	    if (ed_command_letter != 'd' && ed_command_letter != 's') {
+ 	        p_pass_comments_through = true;
+ 		while ((chars_read = get_line ()) != 0) {
+-		    if (pipefp)
+-			if (! fwrite (buf, sizeof *buf, chars_read, pipefp))
++		    if (tmpfp)
++			if (! fwrite (buf, sizeof *buf, chars_read, tmpfp))
+ 			    write_fatal ();
+ 		    if (chars_read == 2  &&  strEQ (buf, ".\n"))
+ 			break;
+@@ -2434,13 +2441,49 @@ do_ed_script (char const *inname, char c
+ 	    break;
+ 	}
+     }
+-    if (!pipefp)
++    if (!tmpfp)
+       return;
+-    if (fwrite ("w\nq\n", sizeof (char), (size_t) 4, pipefp) == 0
+-	|| fflush (pipefp) != 0)
++    if (fwrite ("w\nq\n", sizeof (char), (size_t) 4, tmpfp) == 0
++	|| fflush (tmpfp) != 0)
+       write_fatal ();
+-    if (pclose (pipefp) != 0)
+-      fatal ("%s FAILED", editor_program);
++
++    if (lseek (tmpfd, 0, SEEK_SET) == -1)
++      pfatal ("Can't rewind to the beginning of file %s", quotearg (tmpname));
++
++    if (! dry_run && ! skip_rest_of_patch) {
++	int exclusive = *outname_needs_removal ? 0 : O_EXCL;
++	*outname_needs_removal = true;
++	if (inerrno != ENOENT)
++	  {
++	    *outname_needs_removal = true;
++	    copy_file (inname, outname, 0, exclusive, instat.st_mode, true);
++	  }
++	sprintf (buf, "%s %s%s", editor_program,
++		 verbosity == VERBOSE ? "" : "- ",
++		 outname);
++	fflush (stdout);
++
++	pid = fork();
++	if (pid == -1)
++	  pfatal ("Can't fork");
++	else if (pid == 0)
++	  {
++	    dup2 (tmpfd, 0);
++	    execl ("/bin/sh", "sh", "-c", buf, (char *) 0);
++	    _exit (2);
++	  }
++	else
++	  {
++	    int wstatus;
++	    if (waitpid (pid, &wstatus, 0) == -1
++	        || ! WIFEXITED (wstatus)
++		|| WEXITSTATUS (wstatus) != 0)
++	      fatal ("%s FAILED", editor_program);
++	  }
++    }
++
++    fclose (tmpfp);
++    safe_unlink (tmpname);
+
+     if (ofp)
+       {

devel/patch/patches/patch-tests_Makefile.am

@@ -0,0 +1,14 @@
+$NetBSD$
+
+ - Add ed-style test, related to CVE-2018-1000156 fix.
+
+--- tests/Makefile.am.orig	2018-10-09 17:51:00.211605854 +0000
++++ tests/Makefile.am
+@@ -32,6 +32,7 @@ TESTS = \
+ 	crlf-handling \
+ 	dash-o-append \
+ 	deep-directories \
++	ed-style \
+ 	empty-files \
+ 	false-match \
+ 	fifo \

devel/patch/patches/patch-tests_ed-style

@@ -0,0 +1,48 @@
+$NetBSD$
+
+ - Add ed-style test, related to CVE-2018-1000156 fix.
+
+--- tests/ed-style.orig	2018-10-09 17:51:47.148455875 +0000
++++ tests/ed-style
+@@ -0,0 +1,41 @@
++# Copyright (C) 2018 Free Software Foundation, Inc.
++#
++# Copying and distribution of this file, with or without modification,
++# in any medium, are permitted without royalty provided the copyright
++# notice and this notice are preserved.
++
++. $srcdir/test-lib.sh
++
++require cat
++use_local_patch
++use_tmpdir
++
++# ==============================================================
++
++cat > ed1.diff <<EOF
++0a
++foo
++.
++EOF
++
++check 'patch -e foo -i ed1.diff' <<EOF
++EOF
++
++check 'cat foo' <<EOF
++foo
++EOF
++
++cat > ed2.diff <<EOF
++1337a
++r !echo bar
++,p
++EOF
++
++check 'patch -e foo -i ed2.diff 2> /dev/null || echo "Status: $?"' <<EOF
++?
++Status: 2
++EOF
++
++check 'cat foo' <<EOF
++foo
++EOF