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CVE Record

CVE-2018-8905: In LibTIFF 4.0.9, a heap-based buffer overflow occurs in the function LZWDecodeCompat in tif_lzw.c via a cr...

In LibTIFF 4.0.9, a heap-based buffer overflow occurs in the function LZWDecodeCompat in tif_lzw.c via a crafted TIFF file, as demonstrated by tiff2ps.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2018-8905 is a LibTIFF memory corruption flaw triggered by a crafted TIFF image. If a vulnerable tool or service processes that file, it may crash and could present higher risk depending on how LibTIFF is embedded. The record does not provide CVSS scoring.

Executive priority

Treat this as expedited patching for any environment that processes untrusted images or documents. For systems with no TIFF handling exposure, track through normal vulnerability management, but confirm there are no hidden dependencies.

Technical view

The CVE describes a heap-based buffer overflow in LibTIFF 4.0.9, specifically LZWDecodeCompat in tif_lzw.c, demonstrated through tiff2ps. Debian, Ubuntu, and Red Hat advisories published package updates. The CVE data does not enumerate complete affected versions or downstream product scope.

Likely exposure

Exposure is most likely where systems process TIFF files using vulnerable LibTIFF packages, including image conversion pipelines, document ingestion services, desktop utilities, or legacy tiff/tiff3 packages from affected distributions.

Exploitation context

The source bundle includes a public proof-of-concept reference, but CISA KEV status is false and no cited source confirms active exploitation. Attack feasibility depends on getting a vulnerable parser to open or transform a crafted TIFF file.

Researcher notes

The CVE record is sparse: no CVSS, CWE, or complete affected-version matrix is provided. Analysis should distinguish upstream LibTIFF 4.0.9 from distro-maintained tiff and tiff3 packages. Do not infer active exploitation from the public PoC alone.

Mitigation direction

  • Apply vendor tiff/libtiff updates from Debian, Ubuntu, Red Hat, or your OS vendor.
  • Identify systems using LibTIFF 4.0.9 or affected distro tiff packages.
  • Restrict TIFF upload or conversion paths until vulnerable packages are updated.
  • Run TIFF processing services with least privilege and isolation.
  • Check upstream LibTIFF guidance and the referenced fix commit for source-built deployments.

Validation and detection

  • Inventory installed libtiff, tiff, and tiff3 packages across servers and workstations.
  • Confirm package versions include the relevant Debian, Ubuntu, or Red Hat security fixes.
  • Review applications that accept or convert user-supplied TIFF files.
  • Check whether any source-built LibTIFF includes the referenced upstream commit.
  • Review logs for crashes in TIFF conversion or image-processing workflows.
Prepared
Confidence
medium
Sources
10

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2018-8905 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
9Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.