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7.8

Exempi library can crash servers via crafted PDF

CVE-2017-18234 · published 8 years ago
Summary

The Exempi software used for handling PDF and image metadata can be triggered by a specially crafted PDF file to crash the application, potentially stopping it from working. This affects versions before 2.4.3 and is present in common Linux distributions that include Exempi. Update to the latest version of Exempi or apply the vendor’s security patch to stop the crash.

What to do
  • Update exempi_project exempi to version 2.4.3 or later.
Affected software
VendorProductAffected versions
exempi_project exempi < 2.4.3
cpe:2.3:a:exempi_project:exempi:*:*:*:*:*:*:*:*
debian debian_linux 7.0
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
canonical ubuntu_linux 14.04
16.04
17.10
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
Original advisory text
An issue was discovered in Exempi before 2.4.3. It allows remote attackers to cause a denial of service (invalid memcpy with resultant use-after-free) or possibly have unspecified other impact via ...
An issue was discovered in Exempi before 2.4.3. It allows remote attackers to cause a denial of service (invalid memcpy with resultant use-after-free) or possibly have unspecified other impact via a .pdf file containing JPEG data, related to XMPFiles/source/FormatSupport/ReconcileTIFF.cpp, XMPFiles/source/FormatSupport/TIFF_MemoryReader.cpp, and XMPFiles/source/FormatSupport/TIFF_Support.hpp.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker full control (estimated)
Severity
7.8 High
Exploitation
2% chance of attack within 30 days
Type
CWE-416Use After Free
Timeline
Published15 Mar 2018
Updated3 Nov 2026
First seen29 Sep 2026
Sources
CVE-2017-18234 · NVD
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