82 lines
2.4 KiB
Diff
82 lines
2.4 KiB
Diff
From 6043d77a47de297b62084c1c261cdada082bf09c Mon Sep 17 00:00:00 2001
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From: Andreas Schwab <schwab@suse.de>
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Date: Mon, 28 Aug 2017 19:49:18 +0200
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Subject: [PATCH 15] ldd: never run file directly
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(cherry picked from commit eedca9772e99c72ab4c3c34e43cc764250aa3e3c)
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---
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ChangeLog | 6 ++++++
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NEWS | 9 +++++++++
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elf/ldd.bash.in | 14 +-------------
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3 files changed, 16 insertions(+), 13 deletions(-)
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diff --git a/ChangeLog b/ChangeLog
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index ad05da8ade..fa27c6f66f 100644
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--- a/ChangeLog
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+++ b/ChangeLog
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@@ -1,3 +1,9 @@
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+2017-08-16 Andreas Schwab <schwab@suse.de>
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+
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+ [BZ #16750]
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+ CVE-2009-5064
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+ * elf/ldd.bash.in: Never run file directly.
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+
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2017-08-10 Florian Weimer <fweimer@redhat.com>
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* inet/net-internal.h (__inet6_scopeid_pton): Remove
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diff --git a/NEWS b/NEWS
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index 0534c5296e..756e849643 100644
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--- a/NEWS
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+++ b/NEWS
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@@ -7,8 +7,17 @@ using `glibc' in the "product" field.
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Version 2.26.1
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+Security related changes:
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+
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+ CVE-2009-5064: The ldd script would sometimes run the program under
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+ examination directly, without preventing code execution through the
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+ dynamic linker. (The glibc project disputes that this is a security
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+ vulnerability; only trusted binaries must be examined using the ldd
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+ script.)
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+
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The following bugs are resolved with this release:
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+ [16750] ldd: Never run file directly.
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[21242] assert: Suppress pedantic warning caused by statement expression
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[21780] posix: Set p{read,write}v2 to return ENOTSUP
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[21871] x86-64: Use _dl_runtime_resolve_opt only with AVX512F
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diff --git a/elf/ldd.bash.in b/elf/ldd.bash.in
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index 7dd1fccf24..686785e235 100644
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--- a/elf/ldd.bash.in
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+++ b/elf/ldd.bash.in
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@@ -164,18 +164,6 @@ warning: you do not have execution permission for" "\`$file'" >&2
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fi
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done
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case $ret in
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- 0)
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- # If the program exits with exit code 5, it means the process has been
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- # invoked with __libc_enable_secure. Fall back to running it through
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- # the dynamic linker.
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- try_trace "$file"
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- rc=$?
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- if [ $rc = 5 ]; then
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- try_trace "$RTLD" "$file"
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- rc=$?
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- fi
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- [ $rc = 0 ] || result=1
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- ;;
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1)
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# This can be a non-ELF binary or no binary at all.
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nonelf "$file" || {
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@@ -183,7 +171,7 @@ warning: you do not have execution permission for" "\`$file'" >&2
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result=1
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}
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;;
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- 2)
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+ 0|2)
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try_trace "$RTLD" "$file" || result=1
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;;
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*)
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