|Related CVEs||CVE-2017-11613 CVE-2018-5784|
Two flaws were found in the tiff3 image library that may allow remote attackers to cause a denial of service (memory exhaustion or application crash) or possibly have unspecified other impact via a crafted image file.
In tiff3 there is a denial of service vulnerability in the TIFFOpen function. A crafted input will lead to a denial of service attack. During the TIFFOpen process, td_imagelength is not checked. The value of td_imagelength can be directly controlled by an input file. In the ChopUpSingleUncompressedStrip function, the _TIFFCheckMalloc function is called based on td_imagelength. If we set the value of td_imagelength close to the amount of system memory, it will hang the system or trigger the OOM killer.
A flaw was found in tiff3, there is an uncontrolled resource consumption in the TIFFSetDirectory function of tif_dir.c. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted tif file. This is possible because the declared number of directory entries is not validated against the actual number of directory entries.
For Debian 7 Wheezy, these problems have been fixed in version 3.9.6-11+deb7u12.
We recommend that you upgrade your tiff3 packages.
Further information about Extended LTS security advisories can be found at: https://deb.freexian.com/extended-lts/