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CVE Record

CVE-2020-36280: Leptonica before 1.80.0 allows a heap-based buffer over-read in pixReadFromTiffStream, related to tiffio.c.

Leptonica before 1.80.0 allows a heap-based buffer over-read in pixReadFromTiffStream, related to tiffio.c.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2020-36280 is a Leptonica image-processing flaw fixed in version 1.80.0. A specially malformed TIFF processed by affected code could cause a heap buffer over-read. Business risk is highest where systems process untrusted images, such as OCR, document intake, or media conversion pipelines.

Executive priority

Handle through normal vulnerability management, with higher priority for internet-facing or customer-supplied image processing workflows. No source here supports emergency treatment based on active exploitation.

Technical view

Leptonica before 1.80.0 has a heap-based buffer over-read in pixReadFromTiffStream in tiffio.c. The public sources identify the affected library and fixing release, but do not provide CVSS, CWE, or detailed impact analysis. Treat this as an image parsing memory-safety issue in TIFF stream handling.

Likely exposure

Exposure is likely in applications, services, containers, or Linux packages that include Leptonica before 1.80.0 and process TIFF files. Indirect exposure may exist through OCR or imaging stacks that bundle Leptonica.

Exploitation context

The bundle does not show CISA KEV listing or active exploitation. The OSS-Fuzz reference suggests discovery through fuzz testing, but the provided evidence does not establish real-world exploitation.

Researcher notes

Key evidence is sparse: affected version is before 1.80.0, location is pixReadFromTiffStream in tiffio.c, and references point to OSS-Fuzz, the fixing commit, and distro advisories. No CVSS vector or exploit status is provided.

Mitigation direction

  • Upgrade Leptonica to 1.80.0 or later.
  • Apply fixed Fedora, Gentoo, or other vendor packages where applicable.
  • Prioritize systems processing externally supplied TIFF files.
  • If upgrading is delayed, restrict untrusted TIFF processing until vendor guidance is applied.

Validation and detection

  • Inventory installed Leptonica versions across hosts, containers, and build artifacts.
  • Check OCR and image-processing dependencies for bundled Leptonica copies.
  • Confirm patched package versions using operating system security advisories.
  • Review document intake paths that accept TIFF input from external users.
Prepared
Confidence
medium
Sources
8

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

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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
7Source 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

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