diff options
Diffstat (limited to 'meta-agl-bsp/meta-core/recipes-core/glibc/files/CVE-2017-1000366.backport.patch')
| -rw-r--r-- | meta-agl-bsp/meta-core/recipes-core/glibc/files/CVE-2017-1000366.backport.patch | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/meta-agl-bsp/meta-core/recipes-core/glibc/files/CVE-2017-1000366.backport.patch b/meta-agl-bsp/meta-core/recipes-core/glibc/files/CVE-2017-1000366.backport.patch new file mode 100644 index 000000000..8ce5ca2bc --- /dev/null +++ b/meta-agl-bsp/meta-core/recipes-core/glibc/files/CVE-2017-1000366.backport.patch @@ -0,0 +1,71 @@ +# Source: https://sourceware.org/git/?p=glibc.git;a=patch;h=87bd4186da10371f46e2f1a7bf7c0a45bb04f1ac +# Modified: removed Changelog and NEWS from patch to apply across multiple revisions +# Upstream status: backport +# +# 2017-09-05 jsmoeller@linuxfoundation.org + +From 87bd4186da10371f46e2f1a7bf7c0a45bb04f1ac Mon Sep 17 00:00:00 2001 +From: Florian Weimer <fweimer@redhat.com> +Date: Mon, 19 Jun 2017 18:33:26 +0200 +Subject: [PATCH] CVE-2017-1000366: Ignore LD_LIBRARY_PATH for AT_SECURE=1 + programs [BZ #21624] + +LD_LIBRARY_PATH can only be used to reorder system search paths, which +is not useful functionality. + +This makes an exploitable unbounded alloca in _dl_init_paths unreachable +for AT_SECURE=1 programs. + +(cherry picked from commit f6110a8fee2ca36f8e2d2abecf3cba9fa7b8ea7d) +--- + ChangeLog | 7 +++++++ + NEWS | 1 + + elf/rtld.c | 3 ++- + 3 files changed, 10 insertions(+), 1 deletion(-) + +# removed to apply on older version ... +# +#diff --git a/ChangeLog b/ChangeLog +#index 1795e28..e37f14f 100644 +#--- a/ChangeLog +#+++ b/ChangeLog +#@@ -1,3 +1,10 @@ +#+2017-06-19 Florian Weimer <fweimer@redhat.com> +#+ +#+ [BZ #21624] +#+ CVE-2017-1000366 +#+ * elf/rtld.c (process_envvars): Ignore LD_LIBRARY_PATH for +#+ __libc_enable_secure. +#+ +# 2017-02-01 Andreas Schwab <schwab@linux-m68k.org> +# +# * sysdeps/m68k/m680x0/m68020/atomic-machine.h +#diff --git a/NEWS b/NEWS +#index 82a718f..d42af91 100644 +#--- a/NEWS +#+++ b/NEWS +#@@ -25,6 +25,7 @@ The following bugs are resolved with this release: +# +# [21289] Fix symbol redirect for fts_set +# [21386] Assertion in fork for distinct parent PID is incorrect +#+ [21624] Unsafe alloca allows local attackers to alias stack and heap (CVE-2017-1000366) +# +# Version 2.24 +# +diff --git a/elf/rtld.c b/elf/rtld.c +index 647661c..215a9ae 100644 +--- a/elf/rtld.c ++++ b/elf/rtld.c +@@ -2437,7 +2437,8 @@ process_envvars (enum mode *modep) + + case 12: + /* The library search path. */ +- if (memcmp (envline, "LIBRARY_PATH", 12) == 0) ++ if (!__libc_enable_secure ++ && memcmp (envline, "LIBRARY_PATH", 12) == 0) + { + library_path = &envline[13]; + break; +-- +2.9.3 + |