CVE-2018-9838

Ocaml vulnerability

CVSS

9.8

EPSS

4.2%

EPSS pct

90th

Exploited

No known

The caml_ba_deserialize function in byterun/bigarray.c in the standard library in OCaml 4.06.0 has an integer overflow which, in situations where marshalled data is accepted from an untrusted source, allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via a crafted object.

Affected vendor

Ocaml

Affected product

Ocaml

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness type (CWE)

CWE-190 — Integer Overflow or Wraparound

Published

2018-04-06

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 4.2% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 90% of all scored CVEs.

Check your external exposure to CVE-2018-9838

Confirm whether Ocaml Ocaml is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2018-9838.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2018-9838

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