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Repository 64bit  Wiki
Wed Nov 29 08:15:09 UTC 2017
patches/packages/libXcursor-1.1.15-x86_64-1_slack14.2.txz: Upgraded.
  Fix heap overflows when parsing malicious files. (CVE-2017-16612)
  It is possible to trigger heap overflows due to an integer overflow
  while parsing images and a signedness issue while parsing comments.
  The integer overflow occurs because the chosen limit 0x10000 for
  dimensions is too large for 32 bit systems, because each pixel takes
  4 bytes. Properly chosen values allow an overflow which in turn will
  lead to less allocated memory than needed for subsequent reads.
  The signedness bug is triggered by reading the length of a comment
  as unsigned int, but casting it to int when calling the function
  XcursorCommentCreate. Turning length into a negative value allows the
  check against XCURSOR_COMMENT_MAX_LEN to pass, and the following
  addition of sizeof (XcursorComment) + 1 makes it possible to allocate
  less memory than needed for subsequent reads.
  For more information, see:
  http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16612
  (* Security fix *)
patches/packages/libXfont-1.5.1-x86_64-2_slack14.2.txz: Rebuilt.
  Open files with O_NOFOLLOW. (CVE-2017-16611)
  A non-privileged X client can instruct X server running under root
  to open any file by creating own directory with "fonts.dir",
  "fonts.alias" or any font file being a symbolic link to any other
  file in the system. X server will then open it. This can be issue
  with special files such as /dev/watchdog (which could then reboot
  the system).
  For more information, see:
  http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16611
  (* Security fix *)