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CVE Record

CVE-2020-23922: An issue was discovered in giflib through 5.1.4.

An issue was discovered in giflib through 5.1.4. DumpScreen2RGB in gif2rgb.c has a heap-based buffer over-read.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2020-23922 is a memory-reading flaw in giflib through 5.1.4. It affects the gif2rgb conversion code and may matter where systems process untrusted GIF files. The public bundle does not provide CVSS, a confirmed patch, or evidence of exploitation.

Executive priority

Prioritize based on exposure to untrusted GIF processing. Internet-facing or automated media-processing environments deserve prompt review; systems without GIF conversion workflows are lower urgency until vendor guidance clarifies impact.

Technical view

DumpScreen2RGB in gif2rgb.c contains a heap-based buffer over-read in giflib through 5.1.4. The likely impact is bounded by where gif2rgb or related giflib tooling processes attacker-supplied GIF data. No CVSS vector or detailed affected product matrix is provided.

Likely exposure

Exposure is most likely in servers, build pipelines, containers, or desktop workflows that include giflib 5.1.4 or earlier and process untrusted GIF files. The provided data does not identify specific vendors, CPEs, or application integrations.

Exploitation context

The source bundle does not show CISA KEV listing, active exploitation, exploit maturity, or public weaponization. Treat this as a file-processing memory-safety issue until vendor or distribution advisories provide clearer risk context.

Researcher notes

Primary evidence is the SourceForge bug reference and CVE description. Apache mailing-list links appear to be downstream container vulnerability-tracking references, not proof of exploitation. CWE-126 is relevant for over-read behavior, but the CVE record does not assign a CWE.

Mitigation direction

  • Inventory giflib versions across hosts, images, and application dependencies.
  • Check giflib and operating-system vendor advisories for fixed package guidance.
  • Upgrade to a vendor-supported fixed giflib package when available.
  • Limit untrusted GIF processing through gif2rgb or vulnerable workflows.
  • Rebuild container images that inherit affected giflib packages.

Validation and detection

  • Confirm whether giflib 5.1.4 or earlier exists in runtime or build images.
  • Identify workflows invoking gif2rgb or processing external GIF files.
  • Review scanner findings against vendor package status, not only upstream version strings.
  • Verify remediation by rescanning systems and container images.
  • Document accepted risk where no exposed GIF-processing path exists.
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.

ATT&CK lookup starting points

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CVE-2020-23922 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.