| 1 | # http://sourceware.org/ml/libc-hacker/2010-12/msg00001.html |
| 2 | # new fix for http://seclists.org/fulldisclosure/2010/Oct/257 |
| 3 | |
| 4 | 2010-12-09 Andreas Schwab <schwab@redhat.com> |
| 5 | |
| 6 | * elf/dl-object.c (_dl_new_object): Ignore origin of privileged |
| 7 | program. |
| 8 | --- |
| 9 | elf/dl-object.c | 3 +++ |
| 10 | 1 files changed, 3 insertions(+), 0 deletions(-) |
| 11 | |
| 12 | diff --git a/elf/dl-object.c b/elf/dl-object.c |
| 13 | index 5d15ce1..a34e902 100644 |
| 14 | --- a/elf/dl-object.c |
| 15 | +++ b/elf/dl-object.c |
| 16 | @@ -220,6 +220,9 @@ _dl_new_object (char *realname, const char *libname, int type, |
| 17 | out: |
| 18 | new->l_origin = origin; |
| 19 | } |
| 20 | + else if (INTUSE(__libc_enable_secure) && type == lt_executable) |
| 21 | + /* The origin of a privileged program cannot be trusted. */ |
| 22 | + new->l_origin = (char *) -1; |
| 23 | |
| 24 | return new; |
| 25 | } |
| 26 | |