diff options
Diffstat (limited to 'patches/source/glibc/glibc.CVE-2017-1000366.3c7cd212.diff')
| -rw-r--r-- | patches/source/glibc/glibc.CVE-2017-1000366.3c7cd212.diff | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/patches/source/glibc/glibc.CVE-2017-1000366.3c7cd212.diff b/patches/source/glibc/glibc.CVE-2017-1000366.3c7cd212.diff new file mode 100644 index 00000000..ee2870bc --- /dev/null +++ b/patches/source/glibc/glibc.CVE-2017-1000366.3c7cd212.diff @@ -0,0 +1,32 @@ +From 3c7cd21290cabdadd72984fb69bc51e64ff1002d Mon Sep 17 00:00:00 2001 +From: Florian Weimer <fweimer@redhat.com> +Date: Mon, 19 Jun 2017 18:31:27 +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) + +diff --git a/elf/rtld.c b/elf/rtld.c +index a036ece..2fc33a6 100644 +--- a/elf/rtld.c ++++ b/elf/rtld.c +@@ -2418,7 +2418,8 @@ 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 + + |