CVE-2022-0561

Application crash via null-source memory copy

Published Feb 11, 2022 · Updated Aug 2, 2024

NULL pointer dereference in LibTIFF 3.9.0 through 4.3.0 allows context-dependent attackers to crash a TIFF-processing application. TIFFFetchStripThing() in tif_dirread.c calls _TIFFmemcpy with a null source buffer when a crafted directory entry has a zero count. Processing the crafted TIFF file is required, and the demonstrated consequence is termination of the consuming application rather than system-wide failure.

CVSS severity5.5
Medium
EPSS probability1.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in LibTIFF 3.9.0 through 4.3.0 allows context-dependent attackers to crash a TIFF-processing application. TIFFFetchStripThing() in tif_dirread.c calls _TIFFmemcpy with a null source buffer when a crafted directory entry has a zero count. Processing the crafted TIFF file is required, and the demonstrated consequence is termination of the consuming application rather than system-wide failure.

The record

CVE
CVE-2022-0561
Published
Feb 11, 2022
Updated
Aug 2, 2024
Vendor
LibTIFF
Product
LibTIFF
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 11, 2022CVE 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=>=3.9.0, <=4.3.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

LibTIFF · LibTIFFversion=>=3.9.0, <=4.3.0

Published CVSS scores

5.5GitLabCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499.004Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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