CVE-2023-40745 Libtiff: integer overflow in tiffcp.c

What is CVE-2023-40745?

CVE-2023-40745 is a medium-severity vulnerability in Fedoraproject Fedora, published on 5 Oct 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

LibTIFF is vulnerable to an integer overflow. This flaw allows remote attackers to cause a denial of service (application crash) or possibly execute an arbitrary code via a crafted tiff image, which triggers a heap-based buffer overflow.

Weakness: CWE-190

Which versions are affected by CVE-2023-40745?

It affects 4 products.

Products include Fedoraproject Fedora, Libtiff Libtiff, Netapp Active Iq Unified Manager, Redhat Enterprise Linux.

How do I fix CVE-2023-40745?

Apply the vendor's patch.

Is CVE-2023-40745 being exploited?

There is no known exploitation of CVE-2023-40745 in the wild and no public exploit code.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2024-4577 PHP-CGI OS Command Injection Exploited Critical 9.8
• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-31096, BELL-CVE-2023-40745, DEBIAN-CVE-2023-40745, GHSA-w737-xjxg-h9mw, JLSEC-2025-312.