From nathanp@sco.COM Thu Sep 5 09:11:54 1996 Received: from sco.sco.COM (sco.sco.COM [132.147.128.9]) by suburbia.net (8.7.4/Proff-950810) with SMTP id JAA04225 for ; Thu, 5 Sep 1996 09:11:48 +1000 Received: from grandad.pdev.sco.com by sco.sco.COM id aa23035; 4 Sep 96 12:28 PDT Received: from brother.pdev.sco.com by grandpa.pdev.sco.com id aa05318; 4 Sep 96 12:29 PDT Subject: Re: BoS: More on the UnixWare problem To: best-of-security@suburbia.net Date: Wed, 4 Sep 1996 12:28:24 -0700 (PDT) From: SCO Security Bulletin MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Message-ID: <9609041228.aa16019@brother.pdev.sco.com> =========================================================================== SCO Security Bulletin 96:002 September 4, 1996 Patch for system call security issue --------------------------------------------------------------------------- The Santa Cruz Operation has discovered the following problem present in our software: I. Description A problem in a particular system call may allow unauthorized access to the system. The resulting access may lead to unauthorized root access to the system. II. Impact Any user with an account on the system may be able to gain unauthorized access to system or user files, which may then lead to unauthorized root access. III. Releases This problem exists on the following releases of SCO products: SCO(R) UnixWare(R) release 2.0.x and 2.1.0 IV. Solution SCO is providing Program Temporary Fix (PTF) 3063 to address the issue. This PTF is available for SCO UnixWare release 2.1.0. SCO intends to release a PTF for SCO UnixWare release 2.0.3 in the near future. A workaround for users of SCO UnixWare release 2.0.x or for those who are not yet able to install this PTF follows: As root, execute these commands on the system console: # /etc/conf/bin/idtune -f RSTCHOWN 1 # /etc/conf/bin/idbuild -B # init 6 This procedure sets a kernel parameter that prevents the problem from occuring, relinks the kernel, and reboots the system. You can download the PTF as follows: Anonymous ftp (World Wide Web URL) ------------- ftp://ftp.sco.COM/UW21/ptf3063.Z (patch image, compressed) ftp://ftp.sco.COM/UW21/ptf3063.txt (cover letter/installation notes) Compuserve ---------- PTF 3063 is also available in the UNIXWARE forum on Compuserve. SCO Online Support (SOS) BBS ---------------------------- PTF 3063 can also be downloaded interactively via X, Y, or Z MODEM or Kermit, using the SCO Online Support System (SOS). Follow the menus selections under "Toolchest" from the main SOS menu. The phone numbers available for interactive transfer from SOS are: 1-408-426-9495 (USA) +44 (0)1923 210 888 (United Kingdom) Checksums --------- MD5 --- MD5 (ptf3063.Z) = 1093420123c9bff603bd3c32a3867dcd MD5 (ptf3063.txt) = 0ffa24e5e0d9a8caf8f4076149d782c3 sum -r (on UnixWare) ------ 48571 391 ptf3063.Z 20546 3 ptf3063.txt This bulletin is available for anonymous ftp download from ftp://ftp.sco.COM/SSE/security_bulletins/SB.96:02a, and will be updated as new information becomes available. If you have further questions, contact your support provider. If you need to contact SCO, please send electronic mail to support@sco.COM, or contact SCO as follows. USA/Canada: 6am-5pm Pacific Daylight Time (PDT) ----------- 1-800-347-4381 (voice) 1-408-427-5443 (fax) Pacific Rim, Asia, and Latin American customers: 6am-5pm Pacific ------------------------------------------------ Daylight Time (PDT) 1-408-425-4726 (voice) 1-408-427-5443 (fax) Europe, Middle East, Africa: 9am-5:30pm Greenwich Mean Time (GMT) ---------------------------- +44 (0)1923 816344 (voice) +44 (0)1923 817781 (fax)