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CVE Record

CVE-2020-20739: im_vips2dz in /libvips/libvips/deprecated/im_vips2dz.c in libvips before 8.8.2 has an uninitialized variabl...

im_vips2dz in /libvips/libvips/deprecated/im_vips2dz.c in libvips before 8.8.2 has an uninitialized variable which may cause the leakage of remote server path or stack address.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2020-20739 is an information disclosure issue in libvips before 8.8.2. A flaw in deprecated im_vips2dz handling may expose server paths or stack addresses. That kind of leak is not usually business-disruptive by itself, but it can help attackers understand internal layout and improve follow-on attacks.

Executive priority

Treat this as a scheduled remediation item unless the affected image-processing service is internet-facing and handles untrusted files. Prioritize faster where path or address leaks could weaken other hardening controls.

Technical view

The CVE describes an uninitialized variable in libvips deprecated im_vips2dz.c before 8.8.2. The reported impact is leakage of a remote server path or stack address. The bundle includes an upstream issue, fixing commit, and Debian and Fedora security updates, but no CVSS vector or CWE classification.

Likely exposure

Exposure is most likely where applications use libvips before 8.8.2, especially image-processing workflows that can reach im_vips2dz/deep zoom behavior. The source bundle does not identify specific downstream products, CPEs, or cloud services.

Exploitation context

The source bundle does not show CISA KEV listing or cited active exploitation. The described impact is information leakage, not direct code execution. Practical risk depends on whether untrusted image processing can trigger the affected libvips path.

Researcher notes

Evidence is limited to the CVE description, upstream issue/commit, and distro advisories. No CVSS, CWE, exploit status, or detailed affected product mapping is provided in the bundle, so exposure validation should focus on installed versions and reachable libvips code paths.

Mitigation direction

  • Upgrade libvips to 8.8.2 or a vendor package containing the fix.
  • Apply Debian LTS or Fedora security updates where those packages are used.
  • Check upstream libvips guidance before relying on local workarounds.
  • Reduce untrusted access to affected image-processing paths until updated.

Validation and detection

  • Inventory libvips and vips package versions across servers and containers.
  • Confirm whether applications expose deep zoom or im_vips2dz-related processing to untrusted users.
  • Verify deployed packages include the upstream fixing commit or distro security update.
  • Review logs for unusual image-processing errors or unexpected path disclosure.
Prepared
Confidence
medium
Sources
6

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.

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CVE-2020-20739 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
5Source 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.