CVE-2017-9935 Information

Description

In LibTIFF 4.0.8 there is a heap-based buffer overflow in the t2p_write_pdf function in tools/tiff2pdf.c. This heap overflow could lead to different damages. For example a crafted TIFF document can lead to an out-of-bounds read in TIFFCleanup an invalid free in TIFFClose or t2p_free memory corruption in t2p_readwrite_pdf_image or a double free in t2p_free. Given these possibilities it probably could cause arbitrary code execution.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

http://bugzilla.maptools.org/show_bug.cgi?id=2704 http://www.securityfocus.com/bid/99296 https://lists.debian.org/debian-lts-announce/2017/12/msg00008.html https://usn.ubuntu.com/3606-1/ https://www.debian.org/security/2018/dsa-4100

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8