GNU C Library master sources branch release/2.26/master updated. glibc-2.26-15-g6043d77

[fw at sourceware dot org]

This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".

The branch, release/2.26/master has been updated
       via  6043d77a47de297b62084c1c261cdada082bf09c (commit)
      from  77db8772bd3f6f2bbad697dcf46861ce310f5b95 (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.

- Log -----------------------------------------------------------------
http://sourceware.org/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=6043d77a47de297b62084c1c261cdada082bf09c

commit 6043d77a47de297b62084c1c261cdada082bf09c
Author: Andreas Schwab <schwab@suse.de>
Date:   Mon Aug 28 19:49:18 2017 +0200

    ldd: never run file directly
    
    (cherry picked from commit eedca9772e99c72ab4c3c34e43cc764250aa3e3c)

diff --git a/ChangeLog b/ChangeLog
index ad05da8..fa27c6f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2017-08-16  Andreas Schwab  <schwab@suse.de>
+
+	[BZ #16750]
+	CVE-2009-5064
+	* elf/ldd.bash.in: Never run file directly.
+
 2017-08-10  Florian Weimer  <fweimer@redhat.com>
 
 	* inet/net-internal.h (__inet6_scopeid_pton): Remove
diff --git a/NEWS b/NEWS
index 0534c52..756e849 100644
--- a/NEWS
+++ b/NEWS
@@ -7,8 +7,17 @@ using `glibc' in the "product" field.
 
 Version 2.26.1
 
+Security related changes:
+
+  CVE-2009-5064: The ldd script would sometimes run the program under
+  examination directly, without preventing code execution through the
+  dynamic linker.  (The glibc project disputes that this is a security
+  vulnerability; only trusted binaries must be examined using the ldd
+  script.)
+
 The following bugs are resolved with this release:
 
+  [16750] ldd: Never run file directly.
   [21242] assert: Suppress pedantic warning caused by statement expression
   [21780] posix: Set p{read,write}v2 to return ENOTSUP
   [21871] x86-64: Use _dl_runtime_resolve_opt only with AVX512F
diff --git a/elf/ldd.bash.in b/elf/ldd.bash.in
index 7dd1fcc..686785e 100644
--- a/elf/ldd.bash.in
+++ b/elf/ldd.bash.in
@@ -164,18 +164,6 @@ warning: you do not have execution permission for" "\`$file'" >&2
       fi
     done
     case $ret in
-    0)
-      # If the program exits with exit code 5, it means the process has been
-      # invoked with __libc_enable_secure.  Fall back to running it through
-      # the dynamic linker.
-      try_trace "$file"
-      rc=$?
-      if [ $rc = 5 ]; then
-	try_trace "$RTLD" "$file"
-	rc=$?
-      fi
-      [ $rc = 0 ] || result=1
-      ;;
     1)
       # This can be a non-ELF binary or no binary at all.
       nonelf "$file" || {
@@ -183,7 +171,7 @@ warning: you do not have execution permission for" "\`$file'" >&2
 	result=1
       }
       ;;
-    2)
+    0|2)
       try_trace "$RTLD" "$file" || result=1
       ;;
     *)

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog       |    6 ++++++
 NEWS            |    9 +++++++++
 elf/ldd.bash.in |   14 +-------------
 3 files changed, 16 insertions(+), 13 deletions(-)


hooks/post-receive
-- 
GNU C Library master sources