From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Thu, 07 Aug 2025 10:20:17 +0200 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1ujvrF-007vWl-0L for lore@lore.pengutronix.de; Thu, 07 Aug 2025 10:20:17 +0200 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1ujvrE-00074L-Hu for lore@pengutronix.de; Thu, 07 Aug 2025 10:20:17 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To: Cc:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=H9/bR+gaPg2saWDaeVPlJ59nP9cKZ1k7nq3VwncwLyk=; b=K2qZxn//rfblqTC8o/2qIQev63 OVoYrR5pLyUJ030/oQmi9AooNJp3S4+21AtJUDRkAmn5Nt4PZHZ1UJKGa3U9aNpMRFEcTLKZIcTpE 2ZSjQNBMAg7UqWl4vui47CMrzJ1k1EpY8+Oi09JY8Ls01f2H9kt1EbHuijD+T8kgOLK13hiN1CgbX LzhjSKLx8oYL3XlPQ/zVLEgOklKObaD9dehaWbLGvx+Fij/U+GB3Y+sup2lMunai8OsFaQR8aL59t i1hQWNaywuCR21l5KXqyGmwZ+zuKUm7+Qn2LLActIVZLjrJs3EfoaYQcDfDXtO4DYP50N47v7jDh3 00xQDLSg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1ujvqm-0000000HZt0-2EwA; Thu, 07 Aug 2025 08:19:48 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1ujvqj-0000000HZrM-1DgG for barebox@lists.infradead.org; Thu, 07 Aug 2025 08:19:46 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1ujvqh-0006oJ-Jc for barebox@lists.infradead.org; Thu, 07 Aug 2025 10:19:43 +0200 Received: from dude05.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::54]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1ujvqh-00CLTE-1L for barebox@lists.infradead.org; Thu, 07 Aug 2025 10:19:43 +0200 Received: from localhost ([::1] helo=dude05.red.stw.pengutronix.de) by dude05.red.stw.pengutronix.de with esmtp (Exim 4.96) (envelope-from ) id 1ujvqh-0015nQ-14 for barebox@lists.infradead.org; Thu, 07 Aug 2025 10:19:43 +0200 From: Ahmad Fatoum To: barebox@lists.infradead.org Date: Thu, 7 Aug 2025 10:19:39 +0200 Message-Id: <20250807081942.250226-2-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250807081942.250226-1-a.fatoum@pengutronix.de> References: <20250807081942.250226-1-a.fatoum@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250807_011945_333517_384A3B6A X-CRM114-Status: UNSURE ( 7.76 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.3 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH v2 2/5] security: mark weaker passwords hashing algorithms insecure X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) From: Ahmad Fatoum It's well known that MD5 and SHA1 aren't suitable password hashing algorithms. Let's alert users to that fact by selecting HAS_INSECURE_DEFAULTS. Signed-off-by: Ahmad Fatoum --- v1 -> v2: - unchanged --- security/Kconfig | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/security/Kconfig b/security/Kconfig index 95c062201acf..b9447e73fc6f 100644 --- a/security/Kconfig +++ b/security/Kconfig @@ -43,10 +43,21 @@ choice config PASSWD_SUM_MD5 bool "MD5" select DIGEST_MD5_GENERIC + select HAS_INSECURE_DEFAULTS + help + MD5 had been widely used historically as a cryptographic hash function, + but has been found to suffer from extensive vulnerabilities. + Use of MD5 to hash passwords is strongly discouraged. config PASSWD_SUM_SHA1 bool "SHA1" select DIGEST_SHA1_GENERIC + select HAS_INSECURE_DEFAULTS + help + SHA1 had been widely used historically as a cryptographic hash function, + but has since been cryptographically broken. + SHA-1 was designed for speed and thus use as password hash is strongly + discouraged as it's easier for an attacker to brute force. config PASSWD_SUM_SHA256 bool "SHA256" -- 2.39.5