CVE-2018-7443

Imagemagick vulnerability

CVSS

6.5

EPSS

3.3%

EPSS pct

87th

Exploited

No known

The ReadTIFFImage function in coders/tiff.c in ImageMagick 7.0.7-23 Q16 does not properly validate the amount of image data in a file, which allows remote attackers to cause a denial of service (memory allocation failure in the AcquireMagickMemory function in MagickCore/memory.c).

Affected vendor

Imagemagick

Affected product

Imagemagick

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness type (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

Published

2018-02-23

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 3.3% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2018-7443

Confirm whether Imagemagick Imagemagick is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2018-7443.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-7443

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2018-7443 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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