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

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-10-05 · updated 2026-06-17
Weakness: CWE-190

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.

Affected products

Fedoraproject Fedora: all versions
libtiff: before 4.6.0 — fixed in 4.6.0
Active IQ Unified Manager for VMware vSphere, Linux, and Microsoft Windows: all versions
Red Hat Enterprise Linux: 8.0, 9.0

How to fix

Upgrade to a fixed version: libtiff 4.6.0. Check the vendor advisory for mitigations.

References

https://access.redhat.com/errata/RHSA-2024:2289
https://access.redhat.com/security/cve/CVE-2023-40745
https://bugzilla.redhat.com/show_bug.cgi?id=2235265
https://access.redhat.com/errata/RHSA-2024:2289
https://access.redhat.com/security/cve/CVE-2023-40745
https://bugzilla.redhat.com/show_bug.cgi?id=2235265
https://security.netapp.com/advisory/ntap-20231110-0005/

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