What’s Vulnerable › Vulnerabilities

CVE-2023-3618: Segmentation fault in fax3encode in libtiff/tif_fax3.c

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-07-12 · updated 2026-06-17
• Weakness: CWE-120

Description

A flaw was found in libtiff. A specially crafted tiff file can lead to a segmentation fault due to a buffer overflow in the Fax3Encode function in libtiff/tif_fax3.c, resulting in a denial of service.

Affected products

• Debian Linux: 10.0
• libtiff: before 4.5.1 — fixed in 4.5.1
• Red Hat Enterprise Linux: 8.0, 9.0

How to fix

Upgrade to a fixed version: libtiff 4.5.1. Check the vendor advisory for mitigations.

References

• https://access.redhat.com/security/cve/CVE-2023-3618
• https://bugzilla.redhat.com/show_bug.cgi?id=2215865
• https://lists.debian.org/debian-lts-announce/2023/07/msg00034.html
• https://security.netapp.com/advisory/ntap-20230824-0012/
• https://support.apple.com/kb/HT214036
• https://support.apple.com/kb/HT214037
• https://support.apple.com/kb/HT214038
• https://access.redhat.com/security/cve/CVE-2023-3618
• https://bugzilla.redhat.com/show_bug.cgi?id=2215865
• https://lists.debian.org/debian-lts-announce/2023/07/msg00034.html
• https://lists.debian.org/debian-lts-announce/2025/01/msg00019.html
• https://security.netapp.com/advisory/ntap-20230824-0012/

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