OpenBSD 2.3 Errata

Patches for the OpenBSD base system are distributed as unified diffs. Each patch contains usage instructions. All the following patches are also available in one tar.gz file for convenience.

Patches for supported releases are also incorporated into the -stable branch.

• 001: SECURITY FIX   All architectures
  A remotely exploitable problem exists in bootpd(8). bootpd is disabled by default, but some people may actually be using it. A source code patch exists which remedies this problem. This is the second version of the patch.

• 002: SECURITY FIX   All architectures
  A remote machine lockup problem exists in the TCP decoding code. A source code patch exists which remedies this problem.

• 003: HARDWARE SUPPORT   All architectures
  Some ATAPI cdroms which do not support the full mandatory command set, (e.g. ATAPI_READ_CD_CAPACITY) do not work with the acd(4) driver. A patch is available here.

• 004: SECURITY FIX   All architectures
  Chpass(1) has a file descriptor leak which allows an attacker to modify /etc/master.passwd. A source code patch exists which remedies this problem. For more details, see the Network Associates advisory.

• 005: RELIABILITY FIX   All architectures
  Calling readv(2) with iov_len < 0 or > INT_MAX would result in a kernel panic. This is the third revision of this patch. A source code patch exists which remedies this problem.

• 006: SECURITY FIX   All architectures
  Inetd had a file descriptor leak. A patch is available here.

• 007: BUG FIX   All architectures
  As shipped, unionfs had some serious problems. A patch is available to solve this.

• 008: SECURITY FIX   All architectures
  Some non-allocated file descriptors have implied uses according to system libraries, and hence setuid and setgid processes should not be executed with these descriptors unallocated. A patch which forces setuid and setgid processes to have some descriptors in fd slots 0, 1, and 2 is available here.

• 009: SECURITY FIX   All architectures
  A benign looking buffer overflow in the resolver routines was re-introduced accidentally. The previously fixed behaviour is more correct. A patch to fix this is available here.

• 010: SECURITY FIX   All architectures
  Vulnerabilities have been found in the X11, Xt, Xaw and Xmu libraries. These affect xterm and all other setuid-root programs that use these libraries. The problems are associated with buffer overflows in code that processes user-supplied data. The Xt library problems include those fixed in TOG's recent public patch 3 for X11R6.3. All releases of XFree86 up to and including 3.3.2 patch 1 and the version distributed with OpenBSD are vulnerable to some or all of these problems. These problems are fixed in XFree86 patch 2. The 2nd source patch for these problems, specifically adapted to the OpenBSD 2.3 X11 tree, is available now.

• 011: SECURITY FIX   All architectures
  The kill(2) system call previously would permit a large set of signals to be delivered to setuid or setgid processes. If such processes were using those signals in dubious ways, this could have resulted in security problems of various kinds. The fourth revision of a source code patch which solves the problem is available.

• 012: SECURITY FIX   All architectures
  A possible new security problem exists if you rely on securelevels and immutable or append-only files or character devices. The fix does not permit mmap'ing of immutable or append-only files which are otherwise writable, as the VM system will bypass the meaning of the file flags when writes happen to the file. A source code patch exists which remedies this problem.

• 013: SECURITY FIX   All architectures
  If IPSEC communication is attempted by starting photurisd(8) (which is disabled by default), a system crash may be evoked from remote if an attacker uses some classes of invalid packets. A source code patch exists which remedies this problem.

• 014: SECURITY FIX   All architectures
  As stated in CERT advisory VB-98.04, there are buffer overrun problems in xterm related to the input-Method, preeditType, and *Keymap resources. Additional buffer overruns exist in the Xaw library related to the inputMethod and preeditType resources. The xterm(1) problem represents a security vulnerability for any platform where xterm is installed setuid-root (as is the case for all OpenBSD platforms). The Xaw problem represents a security vulnerability for any setuid-root program that uses the Xaw library (including xterm). Patch1 from XFree86 3.3.2 corrects these problems. We provide a version of this patch file specifically for the OpenBSD 2.3 tree. We also provide tar files which replace the xterm(1) binary and the libXaw libraries on your system. These are expected to be extracted in /usr/X11R6 using the command "tar xvfpz Xawfix.tgz". The files are... i386, alpha, mac68k, mvme68k, hp300, sparc, pmax, and arc.

• 015: RELIABILITY FIX
  The pctr(4) driver has bugs that permit any user to crash the machine, if the CPU is not an Intel CPU. This problem has been properly fixed since, but fixes are hard to apply to the 2.2 or 2.3 releases. To avoid the problem, recompile your kernel without the pctr(4) device driver.

• 016: CORRUPTED FILE
  The CD version of the precompiled ghostscript package is corrupted and not installable. The correct file can be retrieved by FTP from: https://ftp.openbsd.org/pub/OpenBSD/2.3/packages/i386/ghostscript-5.10.tgz. Its checksums (obtained with cksum(1), md5(1) and sha1(1) respectively) are:
  • 725752890 3639338 ghostscript-5.10.tgz
  • MD5 (ghostscript-5.10.tgz) = 3144ca814ad1965d671be2b7be3d3050
  • SHA1 (ghostscript-5.10.tgz) = bd9374fa547ac0078d5207463d3b0a19d80d213c

• 017: RELIABILITY FIX
  The pcvt(4) console driver has a bug that can cause some keyboard controllers to lock up when a key is pressed that toggles the status of a keyboard LED (scroll lock, caps lock, etc). The problem is generally intermittent and the keyboard can be "unlocked" by unplugging and plugging it back in. A source code patch exists which remedies this problem.

• 018: RELIABILITY FIX
  The 2.3 release does not run reliably on the sun4m LX/LC machines (ie. Sparc Classic). A source code patch exists which remedies this problem. Two kernels which replace the ones in the release are also provided: bsd and bsd.scsi3. Other replacements for the 2.3 install tools are also available.

• 019: MINOR INCOMPATIBILITY
  The AmigaOS patch PoolMem improves AmigaOS memory handling tremendously, but confuses loadbsd, which grabs less memory from the system than is available. To work around the problem, be sure to execute

      PoolMem remove
  

  right before running loadbsd. The next release of loadbsd will probably be PoolMem-aware.

• 020: RELEASE WARNING
  The XFree86 binary set shipped on the CD and FTP site are not the exact final set that we shipped for the other releases. A few minor changes, mostly in xdm(1) configuration, were made after those binaries were made. Patches for this might come out later.

• 021: X11 RELEASE ERROR
  The XFree86 binary set was linked with an older version of the C library. To work around the problem, do the following as root.

      cd /usr/lib/
      ln -s libc.so.18.0 libc.so.17
  

• 022: X11 RELEASE ERROR
  The X11R5 server used in this port does not understand the default authorization types used by the X11R6 clients, which results in no clients being able to connect to the server. To fix this problem add the line below to /usr/X11R6/lib/X11/xdm/xdm-config.

      DisplayManager._0.authName: MIT-MAGIC-COOKIE-1
  

• 023: INSTALLATION PROCESS FLAW
  The pmax install does not correctly install the boot block. To work around the problem, after the install program has finished, do the following (assuming scsi id 0):

      disklabel rz0 > /tmp/label
      disklabel -R -B rz0 /tmp/label
  

• 024: RELEASE WARNING
  The XFree86 binary set shipped on the CD and FTP site are not the exact final set that we shipped for the other releases. A few minor changes, mostly in xdm(1) configuration, were made after those binaries were made. Patches for this might come out later.

• 025: X11 RELEASE ERROR
  The XFree86 binary set was linked with an older version of the C library. To work around the problem, do the following as root.

      cd /usr/lib/
      ln -s libc.so.18.0 libc.so.17
  

• 026: RELEASE WARNING
  When you start the install an upgrade option is advertised but there really is no such option.

• 027: RELEASE WARNING
  When you start the install an upgrade option is advertised but there really is no such option.

• 028: RELEASE WARNING
  Unlabeled disks with weird geometries can panic the kernel. A fix will be made available when 2.3 is out.

• 029: SECURITY FIX
  The powerpc release shipped on the OpenBSD 2.3 CD does not contain two late fixes applied late in the release cycle. The rmjob and uucpd patches should be applied to the system if those subsystems are used.