[Qemu-devel] [Bug 1736376] Re: CVE-2017-7471 repeated?

[Greg Kurz]

When using the proxy backend, all accesses to the host filesystem are
handled by an external process running in a chroot() jail. No need to
bother about paths in this case.

CVE-2017-7471 is only applicable to the local backend, because accesses
are handled by QEMU directly in this case.


** Changed in: qemu
       Status: New => Invalid

** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2017-7471

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https://bugs.launchpad.net/bugs/1736376

Title:
  CVE-2017-7471 repeated?

Status in QEMU:
  Invalid

Bug description:
  In the hw/9pfs/9p-proxy.c file I can see the following which is
  changed because of CVE-2017-7471 in the hw/9pfs/9p-local.c. I might be
  wrong but I guess that should be changed as well.

  if(dir_path){
  v9fs_path_sprintf(target,"%s/%s",dir_path->data,name);
  }
  else{
  v9fs_path_sprintf(target,"%s",name);
  }

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