This script is Copyright (C) 2017 Tenable Network Security, Inc.
The remote Oracle Linux host is missing one or more security updates.
From Red Hat Security Advisory 2017:1576 :
An update for mercurial is now available for Red Hat Enterprise Linux
6 and Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security
impact of Important. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.
Mercurial is a fast, lightweight source control management system
designed for efficient handling of very large distributed projects.
Security Fix(es) :
* A flaw was found in the way 'hg serve --stdio' command in Mercurial
handled command-line options. A remote, authenticated attacker could
use this flaw to execute arbitrary code on the Mercurial server by
using specially crafted command-line options. (CVE-2017-9462)
See also :
Update the affected mercurial packages.
Risk factor :
High / CVSS Base Score : 9.0
CVSS Temporal Score : 7.4
Public Exploit Available : true