From nobody Sat Mar 30 00:12:00 2024 X-Original-To: freebsd-security@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4V5yPt528gz5FcDB for ; Sat, 30 Mar 2024 00:12:02 +0000 (UTC) (envelope-from shawn.webb@hardenedbsd.org) Received: from mail-io1-xd29.google.com (mail-io1-xd29.google.com [IPv6:2607:f8b0:4864:20::d29]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1D4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4V5yPt3Hkvz4bql for ; Sat, 30 Mar 2024 00:12:02 +0000 (UTC) (envelope-from shawn.webb@hardenedbsd.org) Authentication-Results: mx1.freebsd.org; none Received: by mail-io1-xd29.google.com with SMTP id ca18e2360f4ac-7d0377850aaso104142539f.3 for ; Fri, 29 Mar 2024 17:12:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=hardenedbsd.org; s=google; t=1711757521; x=1712362321; darn=freebsd.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=xn+Md8OloMPUxedQIyNdEL7YaVe2+4CN+uuV8TdRWgs=; b=Nx840rJHCef4bou32rgQc2V5LaQlF4icPiXJvpTyXeURbhiGk1BMf+bg1y+JHnqVI3 bkcJcwjLjwCmmfHGsnmlh0VktKcbMeadlq1A7T94PJe1kDiuM8yCytHreL+gk63C1fKf SK8xb3WreGrrCqBfUUbboe1I+P5fO2XxKTSJ/zgvPDS1HbUPwAVJ8Kno0E6Z6RFpWcT/ GY821Ito8WmAH1mhVlUS2ivYiiXAR1ukRXDCA1yzpawwv8gw0vswHlO7HmveCikc0nSQ kAf02MYjn2emunQ2NV0MjvfTQcK0GY1DJ3mxi2OqPki8s17GcEjD0Amdb0uNT0jbCpKe QbJg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1711757521; x=1712362321; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=xn+Md8OloMPUxedQIyNdEL7YaVe2+4CN+uuV8TdRWgs=; b=ICfLOV7dE7cRQE/rbrGUF47IGv/+x+/YnPI6KElCiTwi4SGnhvFiXqtCy1m7Y35/62 Ydpnl8cw5NNwqno79l0VHfBLoLbfp39FqdgyovwgLCwPZZ3cz60iwgAvqz2nSLvy18C5 STjfMME0YY8mkl3AZ4JDfETirOxDbpbgRGPxIkktBv4K5OU3ejP/J/C8cny6CvZeITNV ySQu1Bz9ISLY5QgjjFklwKaZEazq398rox0inFkAfVE64+ct2srBqvGSXm2RkAiIri1L PjfQc2UO4a/3fcGg2jK4HGcMRwHncar7uMzI5LR9tHfWNiQSri8Qrlr1g1R7BDqXRaB4 RRsw== X-Gm-Message-State: AOJu0YzZUzbamMFbt0pupVgH3pjFzQgwhZyPdvOkRYysJ2aKIUG00yR8 z5NrRCrAGcWf9DbFIuRxb9qpNChErgdMaoDDIDWMVQauVzyioqxkwnANvPfVud1R9B3DmpdI1fk M X-Google-Smtp-Source: AGHT+IGvFLB/FOr77PHRwqHcTZ6fuu+5n//sRZD5tM18l9vJM4Yg6DtKCATmdGxrGj1zok3t5nlxQw== X-Received: by 2002:a05:6602:2be1:b0:7cf:2255:dd1d with SMTP id d1-20020a0566022be100b007cf2255dd1dmr3644507ioy.17.1711757521441; Fri, 29 Mar 2024 17:12:01 -0700 (PDT) Received: from mutt-hbsd (174-24-72-211.clsp.qwest.net. [174.24.72.211]) by smtp.gmail.com with ESMTPSA id o11-20020a02b80b000000b0047be410bcc5sm1282449jam.27.2024.03.29.17.12.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 29 Mar 2024 17:12:00 -0700 (PDT) Date: Sat, 30 Mar 2024 00:12:00 +0000 From: Shawn Webb To: Alan Somers Cc: freebsd-security , Xin Li Subject: Re: Backdoor in xz 5.6.0 Message-ID: X-Operating-System: FreeBSD mutt-hbsd 15.0-CURRENT-HBSD FreeBSD 15.0-CURRENT-HBSD X-PGP-Key: https://git.hardenedbsd.org/hardenedbsd/pubkeys/-/blob/master/Shawn_Webb/03A4CBEBB82EA5A67D9F3853FF2E67A277F8E1FA.pub.asc References: List-Id: Security issues List-Archive: https://lists.freebsd.org/archives/freebsd-security List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-security@freebsd.org X-BeenThere: freebsd-security@freebsd.org MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="gv3ejimxjmub7ohv" Content-Disposition: inline In-Reply-To: X-Spamd-Bar: ---- X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:15169, ipnet:2607:f8b0::/32, country:US] X-Rspamd-Queue-Id: 4V5yPt3Hkvz4bql --gv3ejimxjmub7ohv Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Mar 29, 2024 at 05:47:51PM -0600, Alan Somers wrote: > A malicious developer added a backdoor to xz 5.6.0 and 5.6.1, and > snuck it into Fedora builds. That's the same version that FreeBSD > CURRENT uses. For multiple reasons we aren't vulnerable (the > malicious code isn't included in xz's git repo, only its dist > tarballs, the malicious code is only triggered on x86_64 linux in an > rpm or deb build, and the malicious code resides in a .m4 file which > our build process doesn't use). But upstream considers all of 5.6.0 > to be untrustworthy and recommends that everyone to 5.4.5. I haven't seen any statement by upstream (the Tukaani project), yet. The bad actor has enjoyed a maintainership role for the xz project for at least one-and-a-half years (since 2022). We might experience another "OpenSSL Heartbleed" reactionary moment whereby the entire project is audited. Until then, some folks would not consider it over-reactionary to distrust any work since the bad actor started contributing. This would apply to other projects the bad actor contributed to as well, like libarchive. Thanks, --=20 Shawn Webb Cofounder / Security Engineer HardenedBSD Tor-ified Signal: +1 303-901-1600 / shawn_webb_opsec.50 https://git.hardenedbsd.org/hardenedbsd/pubkeys/-/raw/master/Shawn_Webb/03A= 4CBEBB82EA5A67D9F3853FF2E67A277F8E1FA.pub.asc --gv3ejimxjmub7ohv Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEA6TL67gupaZ9nzhT/y5nonf44foFAmYHWMkACgkQ/y5nonf4 4foieg/+LHex7puyS+CTlKuP1mXMtR20pyJmhSt0yQ97FXLy2xR4+FcIXGME9Wes 1DgFEHhkSBkIw67+y/p1sqlYWzHvzDK3QbTcSei6wGOrS3ouFdWE8EnpFmOzea5z BSqPuTxRGNtBkG4/ZnD0Jt2JpAGY2cmIJZljHyQo8tFl6lHCIEhzcXwVpb2cnVYL M5GC2DUwgZfBmoG/6l5qn3fKW5chfF4rkggqP2EsUIpUnA8948LSvyGuD3A6kscR XcT7gxXFLEiBjx3+nwDGYsq1nS4nPHcGyg37ArJWPnUoT0zvSjdK7RFnPwoeuKER dbozWAVljcznJDabT0cdiHiSU4+s/RVIB2NY2rRCxi0v5gODLnTRZxZocYdFgbyo TTVp52AezcnxcdYL059bbEWXLADpp9X0ioL5JX1wwHhTv71+9JJwQ+sBMkHsm4x0 MtelHNWTDCv0/G7cdgSLraNT+/x/0WwQ+uNQp+0lPIgJ5hA+M2/LJUe0mx1sFR7/ +6LBb585s9BJ2B6UPk/cszdJbB5oYuHoL6gM3+Psk8YvaeNV0CKIViUfWZRLZVS9 BQS0sU6JyL48OL3trR9Z/DAW4wUWOWmW1iwaoBTJUZ6MxETY+04/LU2twJIEIfNe Gi4qq2fBvbo3eDmGW7+O564iCpPT8SZl89RnUF7l24Mzrb3MKF4= =HiTF -----END PGP SIGNATURE----- --gv3ejimxjmub7ohv--