From owner-freebsd-bugs@FreeBSD.ORG Fri Jan 23 04:07:21 2015 Return-Path: Delivered-To: freebsd-bugs@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id DCACF100 for ; Fri, 23 Jan 2015 04:07:21 +0000 (UTC) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id AA7E65E0 for ; Fri, 23 Jan 2015 04:07:21 +0000 (UTC) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.14.9/8.14.9) with ESMTP id t0N47L4O004291 for ; Fri, 23 Jan 2015 04:07:21 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 197017] segfault in unzip (libarchive) with malformed zip Date: Fri, 23 Jan 2015 04:07:21 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bin X-Bugzilla-Version: 10.1-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: freebsd@delnoch.net X-Bugzilla-Status: New X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-bugs@FreeBSD.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter attachments.created Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 23 Jan 2015 04:07:21 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=197017 Bug ID: 197017 Summary: segfault in unzip (libarchive) with malformed zip Product: Base System Version: 10.1-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: bin Assignee: freebsd-bugs@FreeBSD.org Reporter: freebsd@delnoch.net Created attachment 152045 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=152045&action=edit zip that causes unzip to segfault Running afl-fuzz on unzip I've run into the following - 0x00000008008877e8 in process_extra (p=0x802041022 "UT\t", extra_length=28, zip_entry=0x802055020) at /usr/src/lib/libarchive/../../contrib/libarchive/libarchive/archive_read_support_format_zip.c:1716 1716 gidsize = p[offset+2+uidsize]; Current language: auto; currently minimal (gdb) p offset $1 = 17 (gdb) p uidsize $2 = -124 % zipdetails out/crashes/id:000000,sig:11,src:000000,op:flip1,pos:52 0000 LOCAL HEADER #1 04034B50 0004 Extract Zip Spec 0A '1.0' 0005 Extract OS 00 'MS-DOS' 0006 General Purpose Flag 0000 0008 Compression Method 0000 'Stored' 000A Last Mod Time 463718E0 'Fri Jan 23 03:07:00 2015' 000E CRC 72051312 0012 Compressed Length 0000000F 0016 Uncompressed Length 0000000F 001A Filename Length 0004 001C Extra Length 001C 001E Filename 'test' 0022 Extra ID #0001 5455 'UT: Extended Timestamp' 0024 Length 0009 0026 Flags '03 mod access' 0027 Mod Time 54C1BAD4 'Fri Jan 23 03:07:00 2015' 002B Access Time 54C1BAD4 'Fri Jan 23 03:07:00 2015' 002F Extra ID #0002 7875 'ux: Unix Extra Type 3' 0031 Length 000B 0033 Version 01 0034 UID Size 84 Truncated file (got 120, wanted 132): -- You are receiving this mail because: You are the assignee for the bug.