GLSA-201702-15 : OCaml: Buffer overflow and information disclosure

Medium Nessus Plugin ID 97258


The remote Gentoo host is missing one or more security-related patches.


The remote host is affected by the vulnerability described in GLSA-201702-15 (OCaml: Buffer overflow and information disclosure)

It was discovered that OCaml was vulnerable to a runtime bug that, on 64-bit platforms, causes size arguments to internal memmove calls to be sign-extended from 32- to 64-bits before being passed to the memmove function. This leads to arguments between 2GiB and 4GiB being interpreted as larger than they are (specifically, a bit below 2^64), causing a buffer overflow. Further, arguments between 4GiB and 6GiB are interpreted as 4GiB smaller than they should be causing a possible information leak.
Impact :

A remote attacker, able to interact with an OCaml-based application, could possibly obtain sensitive information or cause a Denial of Service condition.
Workaround :

There is no known workaround at this time.


All OCaml users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=dev-lang/ocam-4.04.0' Packages which depend on OCaml may need to be recompiled. Tools such as qdepends (included in app-portage/portage-utils) may assist in identifying these packages:
# emerge --oneshot --ask --verbose $(qdepends -CQ dev-lang/ocaml | sed 's/^/=/')

See Also

Plugin Details

Severity: Medium

ID: 97258

File Name: gentoo_GLSA-201702-15.nasl

Version: $Revision: 3.1 $

Type: local

Published: 2017/02/21

Modified: 2017/02/21

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:P


Base Score: 9.1

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

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:ocaml, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Patch Publication Date: 2017/02/20

Reference Information

CVE: CVE-2015-8869

GLSA: 201702-15