[PATCH] patch: fix CVE-2019-13638

[PATCH] patch: fix CVE-2019-13638

[Trevor Gamblin]

From: Trevor Gamblin <trevor.gamblin@windriver.com>

Signed-off-by: Trevor Gamblin <trevor.gamblin@windriver.com>
---
 ...ke-ed-directly-instead-of-using-the-shell.patch | 44 ++++++++++++++++++++++
 meta/recipes-devtools/patch/patch_2.7.6.bb         |  1 +
 2 files changed, 45 insertions(+)
 create mode 100644 meta/recipes-devtools/patch/patch/0001-Invoke-ed-directly-instead-of-using-the-shell.patch

diff --git a/meta/recipes-devtools/patch/patch/0001-Invoke-ed-directly-instead-of-using-the-shell.patch b/meta/recipes-devtools/patch/patch/0001-Invoke-ed-directly-instead-of-using-the-shell.patch
new file mode 100644
index 0000000..9f416e3
--- /dev/null
+++ b/meta/recipes-devtools/patch/patch/0001-Invoke-ed-directly-instead-of-using-the-shell.patch
@@ -0,0 +1,44 @@
+From 3fcd042d26d70856e826a42b5f93dc4854d80bf0 Mon Sep 17 00:00:00 2001
+From: Andreas Gruenbacher <agruen@gnu.org>
+Date: Fri, 6 Apr 2018 19:36:15 +0200
+Subject: [PATCH] Invoke ed directly instead of using the shell
+
+* src/pch.c (do_ed_script): Invoke ed directly instead of using a shell
+command to avoid quoting vulnerabilities.
+
++CVE: CVE-2019-13638
++Upstream-Status: Backport[https://git.savannah.gnu.org/cgit/patch.git/patch/?id=3fcd042d26d70856e826a42b5f93dc4854d80bf0]
++Signed-off-by: Trevor Gamblin <trevor.gamblin@windriver.com>
+
+---
+ src/pch.c | 6 ++----
+ 1 file changed, 2 insertions(+), 4 deletions(-)
+
+
+diff --git a/src/pch.c b/src/pch.c
+index 4fd5a05..16e001a 100644
+--- a/src/pch.c
++++ b/src/pch.c
+@@ -2459,9 +2459,6 @@ do_ed_script (char const *inname, char const *outname,
+ 	    *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();
+@@ -2470,7 +2467,8 @@ do_ed_script (char const *inname, char const *outname,
+ 	else if (pid == 0)
+ 	  {
+ 	    dup2 (tmpfd, 0);
+-	    execl ("/bin/sh", "sh", "-c", buf, (char *) 0);
++	    assert (outname[0] != '!' && outname[0] != '-');
++	    execlp (editor_program, editor_program, "-", outname, (char  *) NULL);
+ 	    _exit (2);
+ 	  }
+ 	else
+-- 
+2.7.4
+
diff --git a/meta/recipes-devtools/patch/patch_2.7.6.bb b/meta/recipes-devtools/patch/patch_2.7.6.bb
index 8cf20a3..8908910 100644
--- a/meta/recipes-devtools/patch/patch_2.7.6.bb
+++ b/meta/recipes-devtools/patch/patch_2.7.6.bb
@@ -7,6 +7,7 @@ SRC_URI += "file://0001-Unset-need_charset_alias-when-building-for-musl.patch \
             file://0004-Fix-arbitrary-command-execution-in-ed-style-patches-.patch \
             file://0001-Fix-swapping-fake-lines-in-pch_swap.patch \
             file://CVE-2019-13636.patch \
+            file://0001-Invoke-ed-directly-instead-of-using-the-shell.patch \
 "
 
 SRC_URI[md5sum] = "4c68cee989d83c87b00a3860bcd05600"
-- 
2.7.4

✗ patchtest: failure for patch: fix CVE-2019-13638

[Patchwork]

== Series Details ==

Series: patch: fix CVE-2019-13638
Revision: 1
URL   : https://patchwork.openembedded.org/series/19175/
State : failure

== Summary ==


Thank you for submitting this patch series to OpenEmbedded Core. This is
an automated response. Several tests have been executed on the proposed
series by patchtest resulting in the following failures:



* Patch            patch: fix CVE-2019-13638
 Issue             Missing or incorrectly formatted CVE tag in included patch file [test_cve_tag_format] 
  Suggested fix    Correct or include the CVE tag on cve patch with format: "CVE: CVE-YYYY-XXXX"



If you believe any of these test results are incorrect, please reply to the
mailing list (openembedded-core@lists.openembedded.org) raising your concerns.
Otherwise we would appreciate you correcting the issues and submitting a new
version of the patchset if applicable. Please ensure you add/increment the
version number when sending the new version (i.e. [PATCH] -> [PATCH v2] ->
[PATCH v3] -> ...).

---
Guidelines:     https://www.openembedded.org/wiki/Commit_Patch_Message_Guidelines
Test framework: http://git.yoctoproject.org/cgit/cgit.cgi/patchtest
Test suite:     http://git.yoctoproject.org/cgit/cgit.cgi/patchtest-oe