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[86.7.147.83]) by smtp.gmail.com with ESMTPSA id h14sm8966540wmq.39.2021.02.01.09.27.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Feb 2021 09:27:52 -0800 (PST) Sender: =?UTF-8?Q?Edward_Tomasz_Napiera=C5=82a?= Date: Mon, 1 Feb 2021 17:27:50 +0000 From: Edward Tomasz Napierala To: Shawn Webb , src-committers@freebsd.org, dev-commits-src-all@freebsd.org, dev-commits-src-main@freebsd.org Subject: Re: git: 5299d64b2b9f - main - libc: fix buffer overrun in getrpcport(3) Message-ID: Mail-Followup-To: Shawn Webb , src-committers@freebsd.org, dev-commits-src-all@freebsd.org, dev-commits-src-main@freebsd.org References: <202101312143.10VLhfV5025431@gitrepo.freebsd.org> <20210131215556.eautrr6esynyic6f@mutt-hbsd> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Rspamd-Queue-Id: 4DTvzG6HKmz4SrR X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=oPbX73pP; dmarc=none; spf=pass (mx1.freebsd.org: domain of etnapierala@gmail.com designates 2a00:1450:4864:20::42a as permitted sender) smtp.mailfrom=etnapierala@gmail.com X-Spamd-Result: default: False [-2.70 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_DN_SOME(0.00)[]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36]; RCVD_COUNT_THREE(0.00)[3]; DKIM_TRACE(0.00)[gmail.com:+]; NEURAL_HAM_SHORT(-1.00)[-0.998]; FORGED_SENDER(0.30)[trasz@freebsd.org,etnapierala@gmail.com]; RECEIVED_SPAMHAUS_PBL(0.00)[86.7.147.83:received]; MIME_TRACE(0.00)[0:+]; RBL_DBL_DONT_QUERY_IPS(0.00)[2a00:1450:4864:20::42a:from]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; FROM_NEQ_ENVFROM(0.00)[trasz@freebsd.org,etnapierala@gmail.com]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[freebsd.org]; SPAMHAUS_ZRD(0.00)[2a00:1450:4864:20::42a:from:127.0.2.255]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::42a:from]; MID_RHS_NOT_FQDN(0.50)[]; RCVD_TLS_ALL(0.00)[]; MAILMAN_DEST(0.00)[dev-commits-src-all,dev-commits-src-main] X-BeenThere: dev-commits-src-all@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commit messages for all branches of the src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 01 Feb 2021 17:27:55 -0000 On 0201T1726, Edward Tomasz Napierala wrote: > On 0131T1655, Shawn Webb wrote: > > On Sun, Jan 31, 2021 at 09:43:41PM +0000, Edward Tomasz Napierala wrote: [..] > > Does a fix like this need to get a security advisory report? Also, any > > plans to MFC? > > Sorry, I should have used a better commit message... I don't think > this is exploitable, or even triggerable - from my understanding, the > gethostbyname(3) function cannot return non-AF_INET address, unless > some internal resolver option has been set, which none of the programs > using getrpcport(3) seems to do. Oh, and yes, MFC is planned; I'm not sure what's the current way to mark commits to get an MFC reminder.