The (1) cpStrips and (2) cpTiles functions in the thumbnail tool in LibTIFF 4.0.6 and earlier allow remote attackers to cause a denial of service (out-of-bounds read) via vectors related to the bytecounts[] array variable.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - The (1) cpStrips and (2) cpTiles functions in the thumbnail tool in LibTIFF 4.0.6 and earlier allow remote     attackers to cause a denial of service (out-of-bounds read) via vectors related to the bytecounts[] array     variable. (CVE-2016-3631)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote host is affected by the vulnerability described in GLSA-201701-16 (libTIFF: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in libTIFF. Please review       the CVE identifier and bug reports referenced for details.
  Impact :

    A remote attacker could entice a user to process a specially crafted       image file, possibly resulting in execution of arbitrary code with the       privileges of the process or a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

Version 4.0.2-6+deb7u7 introduced changes that resulted in libtiff being unable to write out tiff files when the compression scheme in use relies on codec-specific TIFF tags embedded in the image.

This problem manifested itself with errors like those: $ tiffcp -r 16
-c jpeg sample.tif out.tif _TIFFVGetField: out.tif: Invalid tag 'Predictor' (not supported by codec). _TIFFVGetField: out.tif: Invalid tag 'BadFaxLines' (not supported by codec). tiffcp:
tif_dirwrite.c:687: TIFFWriteDirectorySec: Assertion `0' failed.

For Debian 7 'Wheezy', these problems have been fixed in version 4.0.2-6+deb7u10.

We recommend that you upgrade your tiff packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
219526	Linux Distros Unpatched Vulnerability : CVE-2016-3631	Nessus	Misc.	high
96373	GLSA-201701-16 : libTIFF: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
94474	Debian DLA-693-2 : tiff regression update	Nessus	Debian Local Security Checks	critical

Detections

Analytics

CVE-2016-3631

high

Tenable Plugins

high

critical

critical