CVE-2018-9838

Publication date 6 April 2018

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

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.

From the Ubuntu Security Team

It was discovered that OCaml mishandled crafted input. An attacker could use this vulnerability to cause a denial of service or possibly execute arbitrary code.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
ocaml	23.04 lunar	Not affected
	22.10 kinetic	Not affected
	22.04 LTS jammy	Not affected
	21.10 impish	Not affected
	21.04 hirsute	Not affected
	20.10 groovy	Not affected
	20.04 LTS focal	Not affected
	19.10 eoan	Not affected
	19.04 disco	Ignored end of life
	18.10 cosmic	Ignored end of life
	18.04 LTS bionic	Fixed 4.05.0-10ubuntu1+esm1 Ubuntu Pro
	17.10 artful	Ignored end of life
	16.04 LTS xenial	Fixed 4.02.3-5ubuntu2+esm1 Ubuntu Pro
	14.04 LTS trusty	Fixed 4.01.0-3ubuntu3.1+esm1 Ubuntu Pro

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Notes

msalvatore

binaries built with ocamlopt will need to be rebuilt after a system upgrade

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H