mirror of
git://git.openwrt.org/openwrt/openwrt.git
synced 2024-12-27 17:12:46 +00:00
patch: apply upstream cve fixes
Apply two upstream patches to address two CVEs: * CVE-2018-1000156 * CVE-2018-6952 Add PKG_CPE_ID to Makefile. Build tested on apm821xx and ar71xx. Signed-off-by: Russell Senior <russell@personaltelco.net>
This commit is contained in:
Russell Senior
Kevin Darbyshire-Bryant
parent
4c3fae4adc
commit
4797dddfde
@ -8,6 +8,8 @@ include $(TOPDIR)/rules.mk
|
||||
|
||||
PKG_NAME:=patch
|
||||
PKG_VERSION:=2.7.6
|
||||
PKG_RELEASE:=2
|
||||
PKG_CPE_ID:=cpe:/a:gnu:patch
|
||||
|
||||
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
|
||||
PKG_SOURCE_URL:=@GNU/patch
|
||||
|
||||
209
tools/patch/patches/010-CVE-2018-1000156.patch
Normal file
209
tools/patch/patches/010-CVE-2018-1000156.patch
Normal file
@ -0,0 +1,209 @@
|
||||
From ee2904728eb4364a36d62d66f723d0b68749e5df Mon Sep 17 00:00:00 2001
|
||||
From: Andreas Gruenbacher <agruen@gnu.org>
|
||||
Date: Fri, 6 Apr 2018 12:14:49 +0200
|
||||
Subject: [PATCH] Fix arbitrary command execution in ed-style patches
|
||||
(CVE-2018-1000156)
|
||||
|
||||
* src/pch.c (do_ed_script): Write ed script to a temporary file instead
|
||||
of piping it to ed: this will cause ed to abort on invalid commands
|
||||
instead of rejecting them and carrying on.
|
||||
* tests/ed-style: New test case.
|
||||
* tests/Makefile.am (TESTS): Add test case.
|
||||
---
|
||||
src/pch.c | 89 +++++++++++++++++++++++++++++++++++------------
|
||||
tests/Makefile.am | 1 +
|
||||
tests/ed-style | 41 ++++++++++++++++++++++
|
||||
3 files changed, 108 insertions(+), 23 deletions(-)
|
||||
create mode 100644 tests/ed-style
|
||||
|
||||
diff --git a/src/pch.c b/src/pch.c
|
||||
index ff9ed2c..8150493 100644
|
||||
--- a/src/pch.c
|
||||
+++ b/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 */
|
||||
|
||||
@@ -2388,22 +2389,28 @@ do_ed_script (char const *inname, char const *outname,
|
||||
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)
|
||||
+ {
|
||||
+ /* 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));
|
||||
+ }
|
||||
|
||||
- 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));
|
||||
- }
|
||||
for (;;) {
|
||||
char ed_command_letter;
|
||||
beginning_of_this_line = file_tell (pfp);
|
||||
@@ -2414,14 +2421,14 @@ do_ed_script (char const *inname, char const *outname,
|
||||
}
|
||||
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 const *outname,
|
||||
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)
|
||||
{
|
||||
diff --git a/tests/Makefile.am b/tests/Makefile.am
|
||||
index 6b6df63..16f8693 100644
|
||||
--- a/tests/Makefile.am
|
||||
+++ b/tests/Makefile.am
|
||||
@@ -32,6 +32,7 @@ TESTS = \
|
||||
crlf-handling \
|
||||
dash-o-append \
|
||||
deep-directories \
|
||||
+ ed-style \
|
||||
empty-files \
|
||||
false-match \
|
||||
fifo \
|
||||
diff --git a/tests/ed-style b/tests/ed-style
|
||||
new file mode 100644
|
||||
index 0000000..d8c0689
|
||||
--- /dev/null
|
||||
+++ b/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
|
||||
--
|
||||
2.19.1
|
||||
|
||||
30
tools/patch/patches/020-CVE-2018-6952.patch
Normal file
30
tools/patch/patches/020-CVE-2018-6952.patch
Normal file
@ -0,0 +1,30 @@
|
||||
From daa51e492049d9fe3ac049165ec19641bf19cd7f Mon Sep 17 00:00:00 2001
|
||||
From: Andreas Gruenbacher <agruen@gnu.org>
|
||||
Date: Fri, 17 Aug 2018 13:35:40 +0200
|
||||
Subject: [PATCH] Fix swapping fake lines in pch_swap
|
||||
|
||||
* src/pch.c (pch_swap): Fix swapping p_bfake and p_efake when there is a
|
||||
blank line in the middle of a context-diff hunk: that empty line stays
|
||||
in the middle of the hunk and isn't swapped.
|
||||
|
||||
Fixes: https://savannah.gnu.org/bugs/index.php?53133
|
||||
---
|
||||
src/pch.c | 2 +-
|
||||
1 file changed, 1 insertion(+), 1 deletion(-)
|
||||
|
||||
diff --git a/src/pch.c b/src/pch.c
|
||||
index 8150493..6994ab2 100644
|
||||
--- a/src/pch.c
|
||||
+++ b/src/pch.c
|
||||
@@ -2114,7 +2114,7 @@ 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;
|
||||
--
|
||||
2.19.1
|
||||
|
||||
Loading…
Reference in New Issue
Block a user