Heap-based Buffer Overflow in LibTIFF t2p_write_pdf Function
Summary
DLA-1206-1: tiff - security update. Affects tiff versions < 4.0.2-6+deb7u17. Fixed in 4.0.2-6+deb7u17. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The LibTIFF package is a library and set of tools for reading, writing, and manipulating TIFF (Tagged Image File Format) files. It provides support for various compression schemes, color spaces, and image types. The vulnerability affects version 4.0.8 of LibTIFF and specifically targets the t2p_write_pdf function in the tiff2pdf.c file. This function is responsible for converting TIFF documents to PDF format. The vulnerability arises from a heap-based buffer overflow, which can lead to several potential damages, including out-of-bounds reads, invalid frees, memory corruption, and double frees. Exploiting this vulnerability could potentially result in arbitrary code execution.
Vulnerability Detail
The heap-based buffer overflow in the t2p_write_pdf function is caused by an underlying assumption that all pages in a TIFF document will have the same transfer function. However, the TIFF standard does not require this to be the case. An attacker can craft a malicious TIFF document that triggers the overflow, leading to various consequences depending on the specific scenario. These consequences include out-of-bounds reads, invalid frees, memory corruption, and double frees. The most severe outcome is the potential for arbitrary code execution, allowing the attacker to gain control over the affected system.
How To Fix
Minimum fixed version
4.0.2-6+deb7u17
This is the first release that contains the fix.
sudo apt-get install --only-upgrade tiffTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround provided for this vulnerability. The recommended solution is to apply the available security update and upgrade to the fixed version of the tiff package.
Conclusion
In conclusion, the LibTIFF package is vulnerable to a heap-based buffer overflow in the t2p_write_pdf function. This vulnerability can have severe consequences, including arbitrary code execution. To mitigate the risk, it is crucial to upgrade to the fixed version of the tiff package. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for tiff →
FAQ
LibTIFF is a library and set of tools for reading, writing, and manipulating TIFF files. It provides support for various compression schemes, color spaces, and image types.
The vulnerability can lead to out-of-bounds reads, invalid frees, memory corruption, and double frees. The most severe consequence is the potential for arbitrary code execution, allowing an attacker to take control of the affected system.
To fix this vulnerability, you should upgrade the tiff package to version 4.0.2-6+deb7u17 or later. This version includes the necessary patches to address the heap-based buffer overflow.
There is no specific workaround provided for this vulnerability. The recommended solution is to apply the available security update and upgrade to the fixed version of the tiff package.
You can find more information about Debian LTS security advisories, including how to apply updates and frequently asked questions, on the Debian LTS wiki: https://wiki.debian.org/LTS
Related vulnerabilities
Recent vulnerabilities recorded for tiff.
