oss-sec mailing list archives
CVE Request: libtiff: Heap-buffer overflow when processing a TIFF image with PixarLog Compression
From: Huzaifa Sidhpurwala <huzaifas () redhat com>
Date: Tue, 25 Sep 2012 14:36:32 +0530
On 09/23/2012 08:29 AM, Solar Designer wrote:
"libtiff 4.0.3 brings "various memory buffer access fixes". Does it fix more than CVE-2012-3401?" to which I have no answer. The change log does in fact mention "Various memory buffer access fixes." as the very first change listed for libtiff. Perhaps someone should review code changes.
I had a look at the libtiff-4.0.3 commit logs and found one issue which seems to bring a possibility of heap-based buffer overflow when using a tiff file with PixarLog compression format. More details at: https://bugzilla.redhat.com/show_bug.cgi?id=860198 Though memory overwrite outside the heap-buffer is only a few bytes, one cannot really overwrite possible arbitrary code execution. Can a CVE id be please assigned to the above flaw? Found two other commits which seemed interesting, but i dont think they could cause arbitrary code execution and i dont want to call them security flaws. 1. OOB read crash tif_packbits.c 2. Memory not properly initialised in tif_fax3.c. Again this one was partly fixed in 4.0.2 and completely fixed in 4.0.3 If anyone else wants to investigate these in more details, please be my guest :) Thanks! -- Huzaifa Sidhpurwala / Red Hat Security Response Team
Current thread:
- tiff2pdf: Heap-based buffer overflow due to improper initialization of T2P context struct pointer Huzaifa Sidhpurwala (Jul 18)
- Re: tiff2pdf: Heap-based buffer overflow due to improper initialization of T2P context struct pointer Henri Salo (Jul 19)
- Re: tiff2pdf: Heap-based buffer overflow due to improper initialization of T2P context struct pointer Huzaifa Sidhpurwala (Jul 19)
- Re: tiff2pdf: Heap-based buffer overflow due to improper initialization of T2P context struct pointer Solar Designer (Sep 22)
- CVE Request: libtiff: Heap-buffer overflow when processing a TIFF image with PixarLog Compression Huzaifa Sidhpurwala (Sep 25)
- Re: CVE Request: libtiff: Heap-buffer overflow when processing a TIFF image with PixarLog Compression Kurt Seifried (Sep 25)
- Re: CVE Request: libtiff: Heap-buffer overflow when processing a TIFF image with PixarLog Compression Sebastian Krahmer (Sep 25)
- Re: CVE Request: libtiff: Heap-buffer overflow when processing a TIFF image with PixarLog Compression Huzaifa Sidhpurwala (Sep 26)
- Re: CVE Request: libtiff: Heap-buffer overflow when processing a TIFF image with PixarLog Compression Tom Lane (Sep 26)
- CVE Request: libtiff: Heap-buffer overflow when processing a TIFF image with PixarLog Compression Huzaifa Sidhpurwala (Sep 25)
- Re: tiff2pdf: Heap-based buffer overflow due to improper initialization of T2P context struct pointer Henri Salo (Jul 19)