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Red Hat Bugzilla – Attachment 685835 Details for
Bug 903020
sudoers containing specially crafted aliases causes segfault of visudo
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[patch]
proposed patch
sudo-1.8.6p3-cyclesegv.patch (text/plain), 825 bytes, created by
Daniel Kopeček
on 2013-01-23 11:45:11 UTC
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Description:
proposed patch
Filename:
MIME Type:
Creator:
Daniel Kopeček
Created:
2013-01-23 11:45:11 UTC
Size:
825 bytes
patch
obsolete
>diff -up sudo-1.8.6p3/plugins/sudoers/visudo.c.cyclesegv sudo-1.8.6p3/plugins/sudoers/visudo.c >--- sudo-1.8.6p3/plugins/sudoers/visudo.c.cyclesegv 2013-01-23 12:15:32.493762418 +0100 >+++ sudo-1.8.6p3/plugins/sudoers/visudo.c 2013-01-23 12:40:52.280432614 +0100 >@@ -1075,18 +1075,16 @@ alias_remove_recursive(char *name, int t > bool rval = true; > debug_decl(alias_remove_recursive, SUDO_DEBUG_ALIAS) > >- if ((a = alias_find(name, type)) != NULL) { >+ if ((a = alias_remove(name, type)) != NULL) { > tq_foreach_fwd(&a->members, m) { > if (m->type == ALIAS) { > if (!alias_remove_recursive(m->name, type)) > rval = false; > } > } >+ rbinsert(alias_freelist, a); > } > alias_seqno++; >- a = alias_remove(name, type); >- if (a) >- rbinsert(alias_freelist, a); > debug_return_bool(rval); > } >
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bug 903020
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