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https://github.com/sudo-project/sudo.git
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fdafc2ceb3
We cannot perform passwd/group lookups _after_ changing the root directory. This does mean that symbolic links in a path are not currently handled properly when matching chroot()ed commands. Fixes a local privilege escalation vulnerability where a user could craft their own nsswitch.conf file to load a shared library of their choosing and run arbitrary code. CVE-2025-32463 Reported by Rich Mirch @ Stratascale Cyber Research Unit (CRU).
97 lines
2.0 KiB
C
97 lines
2.0 KiB
C
/*
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* SPDX-License-Identifier: ISC
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*
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* Copyright (c) 2018-2023 Todd C. Miller <Todd.Miller@sudo.ws>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/*
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* This is an open source non-commercial project. Dear PVS-Studio, please check it.
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* PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
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*/
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/*
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* Stub versions of functions needed by the parser.
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* Required to link cvtsudoers and visudo.
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*/
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#include <config.h>
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#include <stdio.h>
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#include <string.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <sudoers.h>
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#include <interfaces.h>
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/* STUB */
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bool
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init_envtables(void)
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{
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return true;
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}
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/* STUB */
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bool
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user_is_exempt(const struct sudoers_context *ctx)
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{
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return false;
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}
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/* STUB */
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void
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sudo_setspent(void)
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{
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return;
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}
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/* STUB */
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void
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sudo_endspent(void)
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{
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return;
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}
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/* STUB */
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int
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group_plugin_query(const char *user, const char *group, const struct passwd *pw)
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{
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return false;
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}
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/* STUB */
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struct interface_list *
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get_interfaces(void)
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{
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static struct interface_list empty = SLIST_HEAD_INITIALIZER(interfaces);
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return ∅
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}
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/* STUB */
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int
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set_cmnd_path(struct sudoers_context *ctx, const char *runchroot)
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{
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/* Cannot return FOUND without also setting ctx->user.cmnd to a new value. */
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return NOT_FOUND;
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}
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/* STUB */
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void
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init_eventlog_config(void)
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{
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return;
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}
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