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CVE Record

CVE-2018-20617: ok-file-formats through 2018-10-16 has a heap-based buffer overflow in the ok_csv_decode2 function in ok_cs...

ok-file-formats through 2018-10-16 has a heap-based buffer overflow in the ok_csv_decode2 function in ok_csv.c.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2018-20617 is a reported heap-based buffer overflow in the ok-file-formats CSV decoder. The business risk depends on whether your software embeds this library and processes CSV files from users, partners, or other untrusted sources.

Executive priority

Treat this as a targeted dependency review item, not an emergency, unless the library is exposed to untrusted CSV input in production.

Technical view

The CVE identifies a heap-based buffer overflow in ok_csv_decode2 in ok_csv.c in ok-file-formats through 2018-10-16. The source bundle provides no CVSS score, CWE mapping, fixed version, exploit maturity, or downstream affected product list.

Likely exposure

Exposure is likely limited to applications that include ok-file-formats and invoke its CSV decoder on external or attacker-controlled CSV input.

Exploitation context

No active exploitation is supported by the provided sources, and the CVE is not listed as KEV. Public evidence identifies the vulnerable function but not real-world exploitation.

Researcher notes

Evidence is sparse. The CVE gives function-level location and vulnerability class, but no scoring, patch reference, proof-of-concept status, or affected downstream consumers.

Mitigation direction

  • Inventory code and SBOMs for ok-file-formats usage.
  • Check the upstream GitHub issue and vendor guidance for fixed code or replacement advice.
  • Avoid processing untrusted CSV files with affected builds until remediated.
  • Consider sandboxing or isolating CSV parsing where removal is not immediately possible.

Validation and detection

  • Search repositories for ok-file-formats, ok_csv.c, and ok_csv_decode2.
  • Confirm whether CSV inputs can originate from users, uploads, partners, or email workflows.
  • Identify the bundled source date or commit relative to 2018-10-16.
  • Review crash reports or memory-safety findings involving CSV parsing.
Prepared
Confidence
medium
Sources
3

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-2018-20617 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
2Source 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.