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| | From 6043d77a47de297b62084c1c261cdada082bf09c Mon Sep 17 00:00:00 2001
From: Andreas Schwab <schwab@suse.de>
Date: Mon, 28 Aug 2017 19:49:18 +0200
Subject: [PATCH 15/90] ldd: never run file directly
(cherry picked from commit eedca9772e99c72ab4c3c34e43cc764250aa3e3c)
diff --git a/ChangeLog b/ChangeLog
index ad05da8ade..fa27c6f66f 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 0534c5296e..756e849643 100644
--- a/NEWS
+++ b/NEWS
@@ -7,8 +7,17 @@ using `glibc' in the "product" field.
\f
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 7dd1fccf24..686785e235 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
;;
*)
|