CVE-2023-1916Public exploit

Crash and memory disclosure via unchecked crop bounds

Published Apr 10, 2023 · Updated Aug 2, 2024

Out-of-bounds read in LibTIFF tiffcrop 4.0 through 4.5.0 allows local users to crash the tool or disclose limited memory via a crafted TIFF file. During rotated section extraction, getCropOffsets fails to reject crop dimensions beyond the image boundary, so extractImageSection reads past its allocated buffer. Processing the malicious file with section extraction and 90- or 270-degree rotation is required; the resulting read can terminate tiffcrop or expose adjacent memory.

CVSS severity6.1
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in LibTIFF tiffcrop 4.0 through 4.5.0 allows local users to crash the tool or disclose limited memory via a crafted TIFF file. During rotated section extraction, getCropOffsets fails to reject crop dimensions beyond the image boundary, so extractImageSection reads past its allocated buffer. Processing the malicious file with section extraction and 90- or 270-degree rotation is required; the resulting read can terminate tiffcrop or expose adjacent memory.

The record

CVE
CVE-2023-1916
Published
Apr 10, 2023
Updated
Aug 2, 2024
Vendor
LibTIFF
Product
LibTIFF
Classifications
CWE-125, T1204.002
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=libtiff versions 4.x and newer are affected

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

LibTIFF · LibTIFFversion=libtiff versions 4.x and newer are affected

Published CVSS scores

6.1GitLab Advisory DatabaseCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
6.1Canonical UbuntuCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
6.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1204.002Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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