forked from rpms/glibc
fb633eaa14
remaining patches into distinct patchfiles. Thanks to
Dmitry V. Levin for identifying them!
Drop ia64 specific patches and specfile fragments
99 lines
3.6 KiB
Diff
99 lines
3.6 KiB
Diff
From 207e77fd3f0a94acdf0557608dd4f10ce0e0f22f Mon Sep 17 00:00:00 2001
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From: Andreas Schwab <schwab@redhat.com>
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Date: Mon, 9 May 2011 10:55:58 +0200
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Subject: [PATCH] Never leave $ORIGIN unexpanded
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* elf/dl-load.c (is_dst): Remove parameter secure, all callers
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changed. Move check for valid use of $ORIGIN ...
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(_dl_dst_substitute): ... here. Reset check_for_trusted when a
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path element is skipped.
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---
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ChangeLog | 7 +++++++
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elf/dl-load.c | 34 ++++++++++++++++------------------
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2 files changed, 23 insertions(+), 18 deletions(-)
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diff --git a/elf/dl-load.c b/elf/dl-load.c
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index 18a83d2..6e16a9a 100644
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--- a/elf/dl-load.c
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+++ b/elf/dl-load.c
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@@ -249,8 +249,7 @@ is_trusted_path_normalize (const char *path, size_t len)
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static size_t
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-is_dst (const char *start, const char *name, const char *str,
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- int is_path, int secure)
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+is_dst (const char *start, const char *name, const char *str, int is_path)
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{
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size_t len;
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bool is_curly = false;
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@@ -279,12 +278,6 @@ is_dst (const char *start, const char *name, const char *str,
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&& (!is_path || name[len] != ':'))
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return 0;
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- if (__builtin_expect (secure, 0)
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- && ((name[len] != '\0' && name[len] != '/'
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- && (!is_path || name[len] != ':'))
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- || (name != start + 1 && (!is_path || name[-2] != ':'))))
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- return 0;
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-
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return len;
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}
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@@ -299,13 +292,10 @@ _dl_dst_count (const char *name, int is_path)
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{
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size_t len;
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- /* $ORIGIN is not expanded for SUID/GUID programs (except if it
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- is $ORIGIN alone) and it must always appear first in path. */
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++name;
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- if ((len = is_dst (start, name, "ORIGIN", is_path,
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- INTUSE(__libc_enable_secure))) != 0
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- || (len = is_dst (start, name, "PLATFORM", is_path, 0)) != 0
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- || (len = is_dst (start, name, "LIB", is_path, 0)) != 0)
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+ if ((len = is_dst (start, name, "ORIGIN", is_path)) != 0
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+ || (len = is_dst (start, name, "PLATFORM", is_path)) != 0
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+ || (len = is_dst (start, name, "LIB", is_path)) != 0)
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++cnt;
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name = strchr (name + len, '$');
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@@ -338,9 +328,16 @@ _dl_dst_substitute (struct link_map *l, const char *name, char *result,
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size_t len;
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++name;
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- if ((len = is_dst (start, name, "ORIGIN", is_path,
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- INTUSE(__libc_enable_secure))) != 0)
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+ if ((len = is_dst (start, name, "ORIGIN", is_path)) != 0)
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{
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+ /* For SUID/GUID programs $ORIGIN must always appear
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+ first in a path element. */
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+ if (__builtin_expect (INTUSE(__libc_enable_secure), 0)
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+ && ((name[len] != '\0' && name[len] != '/'
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+ && (!is_path || name[len] != ':'))
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+ || (name != start + 1 && (!is_path || name[-2] != ':'))))
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+ repl = (const char *) -1;
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+ else
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#ifndef SHARED
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if (l == NULL)
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repl = _dl_get_origin ();
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@@ -351,9 +348,9 @@ _dl_dst_substitute (struct link_map *l, const char *name, char *result,
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check_for_trusted = (INTUSE(__libc_enable_secure)
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&& l->l_type == lt_executable);
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}
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- else if ((len = is_dst (start, name, "PLATFORM", is_path, 0)) != 0)
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+ else if ((len = is_dst (start, name, "PLATFORM", is_path)) != 0)
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repl = GLRO(dl_platform);
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- else if ((len = is_dst (start, name, "LIB", is_path, 0)) != 0)
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+ else if ((len = is_dst (start, name, "LIB", is_path)) != 0)
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repl = DL_DST_LIB;
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if (repl != NULL && repl != (const char *) -1)
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@@ -373,6 +370,7 @@ _dl_dst_substitute (struct link_map *l, const char *name, char *result,
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element, but keep an empty element at the end. */
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if (wp == result && is_path && *name == ':' && name[1] != '\0')
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++name;
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+ check_for_trusted = false;
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}
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else
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/* No DST we recognize. */
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