oss-sec mailing list archives
DoS in libtiff
From: Gustavo Grieco <gustavo.grieco () gmail com>
Date: Mon, 21 Sep 2015 12:02:10 -0300
Hi, We found a DoS using a crafted tiff file that causes a OOM kill in low memory system (usually less than 3GB). This was tested in Ubuntu 14.04 (64bit) but the issue exists even in the CVS libtiff version. Please find attached the compressed test case (otherwise it can kill my browser since gdk-pixbuf is loading tiff files in the preview dialog!). You can test it executing: $ tiffdither oom.tif /dev/null If you run it with ltrace, you can see some very large reallocs: libtiff.so.5->realloc(0, 1636178024) = 0x7f71a42b6010 libtiff.so.5->realloc(0, 1636178024) = 0x7f7142a54010 Upstream was notified but there is still no fix. Regards, Gustavo.
Attachment:
oom.tif.gz
Description:
Current thread:
- DoS in libtiff Gustavo Grieco (Sep 21)
- Re: DoS in libtiff cve-assign (Sep 22)
- Re: DoS in libtiff Gustavo Grieco (Sep 23)
- Re: DoS in libtiff cve-assign (Sep 22)