dbcve.org
Debian LinuxOperating system · Debian

CVE-2020-35530

MEDIUM · 5.5 CVSS v3.1 Published 2022-09-01
Patch available
A vendor patch is available. No clean upgrade release — apply the published patch.
See remediation →
58/100
Remediation priority · Elevated
Public exploit No privileges Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
In LibRaw, there is an out-of-bounds write vulnerability within the "new_node()" function (libraw\src\x3f\x3f_utils_patched.cpp) that can be triggered via a crafted X3F file.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis
How this class of weakness works · CWE-787

The program writes past the bounds of a buffer, overwriting adjacent memory an attacker can turn to their advantage. Crafted input can overwrite control data and redirect execution. Remediation is validating every index and length before a write, plus modern memory-safety mitigations.

General guidance for the out-of-bounds write class — the official description and references above are authoritative for this specific CVE. Want a bespoke review and a reviewed fix? Ask our team →

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Debian LinuxOperating system
Affected:= 10.0
LibrawApplication
Affected:= 0.20.0= 0.20.1= 0.20.2= 0.21.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Patch available Apply the vendor patch
Vendor patch github.com →
Recommended fix Moderate confidence

LibRaw version containing the fix (check vendor release notes for version number after 0.21.0 that includes commit 11c4db2)

  1. 1. Identify all applications and systems that depend on the affected LibRaw library versions (0.20.0, 0.20.1, 0.20.2, or 0.21.0).
  2. 2. Consult the vendor security advisory or release notes to identify the specific version that includes the fix from commit 11c4db253ef2c9bb44247b578f5caa57c66a1eeb.
  3. 3. Obtain the patched LibRaw library from the official vendor (LibRaw project or Debian security updates).
  4. 4. Test the patched library in a non-production environment to ensure compatibility with dependent applications.
  5. 5. Deploy the updated library to production systems, following standard change management procedures.
  6. 6. Verify that the update was successfully applied by checking the library version or inspecting the patched code in new_node() function.
Caveat Test thoroughly - minor version upgrades in image processing libraries may affect decoding behavior for edge case image formats

Generated from the published advisory — verify against the referenced sources before acting.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2020-35530 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
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