CVE-2023-3618

Segmentation fault in fax3encode in libtiff/tif_fax3.c

MEDIUM
6.5
CVSS Score
Published: July 12, 2023 at 02:06 PM UTC
Updated: June 17, 2026 at 06:14 AM UTC
4 products affected across 4 vendorsDebian LinuxEnterprise LinuxLibTIFF

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Severity
MEDIUM6.5
Exploit prediction
EPSS 1%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 4.5.1
Affected range stops below 4.5.1, so it looks safe — our inference, not a vendor statement
Vendor states this is fixed in 6 (unknown)
Vendor states this is fixed in 7 (unknown)
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMredhat
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-120

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