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AJvYcCVEH2kz0DjA5Z1z4cbwLTnoNgQjAWqcYHNB8TCeB29r9wajs9brI8sW+644emaVRhsNWYlVmR3nH8d0J9RMxqjW57bDUeYSVxiSg0jqzeI3NHBtI/HdxKho4x40hD1bH1SkFF4lXJby984eyk6dQYK4WftIfHmGvvK/dRUKP4q2KALspFVmK1dBgqElCg+RMdE= X-Gm-Message-State: AOJu0YxAXIJRfedFoaYHw+gMwQhCBbgH50rRZ62lg/XQ54sEpY1sYG+g nXIOEvEb2Yi/vjGc0Vl6kCZhxti9+GlKPWdNVY/lRpf3rytxidAqVhlhGvHWh8op7nezkD0fxcD RiFvgiTkXayMMEHsPfHEoeVwtVnk= X-Google-Smtp-Source: AGHT+IFr/mk89OIuDrAQJycz/41pho9/CO7z4HflnAOOqjYDCkgQsVY3qY3d4UHeD1DTdmjg2EqLmOygabHMwsrrrz0= X-Received: by 2002:a05:600c:3508:b0:416:2f34:b2e3 with SMTP id h8-20020a05600c350800b004162f34b2e3mr2425012wmq.38.1712351766238; Fri, 05 Apr 2024 14:16:06 -0700 (PDT) MIME-Version: 1.0 References: <20240329203909.GS9427@gnu.wildebeest.org> <20240401150617.GF19478@gnu.wildebeest.org> <12215cd2-16db-4ee4-bd98-6a4bcf318592@cs.ucla.edu> <6239192ba9ff8aad0752309a54b633dc75a57c77.camel@tugraz.at> <8e877d2f-01e0-c786-dea5-265edbdc0c07@suse.de> <8d84f989031aa34eae919f8ff2d3cb4e60faf6a7.camel@gwdg.de> In-Reply-To: <8d84f989031aa34eae919f8ff2d3cb4e60faf6a7.camel@gwdg.de> Date: Fri, 5 Apr 2024 17:15:55 -0400 Message-ID: Subject: Re: Sourceware mitigating and preventing the next xz-backdoor To: Martin Uecker Cc: Jonathon Anderson , Michael Matz , Ian Lance Taylor , Paul Koning , Paul Eggert , Sandra Loosemore , Mark Wielaard , overseers@sourceware.org, gcc@gcc.gnu.org, binutils@sourceware.org, gdb@sourceware.org, libc-alpha@sourceware.org X-Spam-Status: No, score=-3030.9 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, HTML_MESSAGE, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.30 X-BeenThere: gdb@sourceware.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gdb mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Andrew Sutton via Gdb Reply-To: Andrew Sutton Errors-To: gdb-bounces+public-inbox=simark.ca@sourceware.org Sender: "Gdb" > > > > > I think the key difference here is that Autotools allows arbitrarily > generated code to be executed at any time. More modern build systems > require the use of specific commands/files to run arbitrary code, e.g. > CMake (IIRC [`execute_process()`][2] and [`ExternalProject`][3]), Meson > ([`run_command()`][1]), Cargo ([`build.rs`][4]).\ > > To me it seems that Cargo is the absolute worst case with respect to > supply chain attacks. > > It pulls in dependencies recursively from a relatively uncurated > list of projects, puts the source of all those dependencies into a > hidden directory in home, and runs Build.rs automatically with > user permissions. > 100% this. Wait until you learn how proc macros work.