diff options
Diffstat (limited to 'gnu/packages/patches/glibc-CVE-2017-1000366-pt1.patch')
| -rw-r--r-- | gnu/packages/patches/glibc-CVE-2017-1000366-pt1.patch | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/gnu/packages/patches/glibc-CVE-2017-1000366-pt1.patch b/gnu/packages/patches/glibc-CVE-2017-1000366-pt1.patch new file mode 100644 index 0000000000..71e80968be --- /dev/null +++ b/gnu/packages/patches/glibc-CVE-2017-1000366-pt1.patch @@ -0,0 +1,36 @@ +From f6110a8fee2ca36f8e2d2abecf3cba9fa7b8ea7d Mon Sep 17 00:00:00 2001 +From: Florian Weimer <fweimer@redhat.com> +Date: Mon, 19 Jun 2017 17:09:55 +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. + +patch from: +https://sourceware.org/git/?p=glibc.git;a=commit;h=f6110a8fee2ca36f8e2d2abecf3cba9fa7b8ea7d +--- + ChangeLog | 7 +++++++ + elf/rtld.c | 3 ++- + 2 files changed, 9 insertions(+), 1 deletion(-) + +diff --git a/elf/rtld.c b/elf/rtld.c +index 2446a87..2269dbe 100644 +--- a/elf/rtld.c ++++ b/elf/rtld.c +@@ -2422,7 +2422,8 @@ 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 + |