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CVE-2018-16876· NVD / CVE Program· CNA redhat

ansible before versions 2.5.14, 2.6.11, 2.7.5 is vulnerable to a information disclosure flaw in vvv+ mode with no_log on that can lead to le

Noroxi assessment

Priority: Monitor (action score 22/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 2.4% (FIRST EPSS); higher than 84.2% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. Special conditions such as timing or configuration are required.
  • Fixed version: ansible (Alpine:v3.10) 2.7.9-r0; ansible-base (Alpine:v3.13) 2.7.9-r0; ansible (Alpine:v3.8) 2.5.14-r0.
  • Severity is disputed: the assigning authority (CNA) scores it 3.1, NVD 5.3.

Low priority for now. Upgrade to ansible (Alpine:v3.10) 2.7.9-r0; ansible-base (Alpine:v3.13) 2.7.9-r0; ansible (Alpine:v3.8) 2.5.14-r0 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

ansible before versions 2.5.14, 2.6.11, 2.7.5 is vulnerable to a information disclosure flaw in vvv+ mode with no_log on that can lead to leakage of sensible data.

MediumCVSS 5.3 · v3.1—No exploit Fix available
Published
Jan 3, 2019
Updated
Jun 16, 2026
EPSS
2.5% · 84th percentile

Report tools

JSON

Action score

22

Monitor

Low priority for now.

CVSS
21 / 40 · 5.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.5%

CNA vs NVD score

NVD
5.3
CNA · redhat
3.1
2.2 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2018-16876

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
redhatansible
redhatansible engine
redhatopenstack
redhatenterprise linux desktop
redhatenterprise linux server
redhatenterprise linux workstation
debiandebian linux
susepackage hub
suselinux enterprise
canonicalubuntu linux

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • canonical ubuntu linux16.04
  • canonical ubuntu linux18.04
  • canonical ubuntu linux19.04
  • debian debian linux9.0
  • redhat ansible2.5.0 and later · before 2.5.14
  • redhat ansible2.6.0 and later · before 2.6.11
  • redhat ansible2.7.0 and later · before 2.7.5
  • redhat ansible engine2.0
  • redhat ansible engine2.5
  • redhat ansible engine2.6
  • redhat ansible engine2.7
  • redhat enterprise linux desktop7.0
  • redhat enterprise linux server7.0
  • redhat enterprise linux workstation7.0
  • redhat openstack14
  • suse package huball versions

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Red Hat ansible

    • before 2.5.14, before 2.6.11, before 2.7.5affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.10ansiblefrom 2.5.0 · before 2.7.9-r02.7.9-r0
Alpine:v3.13ansible-basebefore 2.7.9-r02.7.9-r0
Alpine:v3.8ansiblefrom 2.5.0 · before 2.5.14-r02.5.14-r0
Alpine:v3.9ansiblefrom 2.5.0 · before 2.7.5-r02.7.5-r0
Debian:12ansiblebefore 2.7.6+dfsg-12.7.6+dfsg-1
Debian:9ansiblebefore 2.2.1.0-2+deb9u12.2.1.0-2+deb9u1
openSUSE:Tumbleweedansible-10before 10.6.0-1.110.6.0-1.1
openSUSE:Tumbleweedansible-11before 11.11.0-1.111.11.0-1.1
openSUSE:Tumbleweedansible-12before 12.2.0-1.112.2.0-1.1
openSUSE:Tumbleweedansible-13before 13.7.0-1.113.7.0-1.1
openSUSE:Tumbleweedansible-9before 9.8.0-1.19.8.0-1.1
PyPIansiblefrom 2.5.0 · before 2.5.142.5.14
PyPIansiblefrom 2.6.0 · before 2.6.112.6.11
PyPIansiblefrom 2.6.0a1 · before 2.6.112.6.11
PyPIansiblefrom 2.7.0 · before 2.7.52.7.5
PyPIansiblefrom 2.7.0a1 · before 2.7.52.7.5
PyPIansiblebefore 2.5.142.5.14
Red Hat:ansible_engine:2.5::el7ansiblebefore 0:2.5.14-1.el7ae0:2.5.14-1.el7ae
Red Hat:ansible_engine:2.5::el7ansible-docbefore 0:2.5.14-1.el7ae0:2.5.14-1.el7ae
Red Hat:ansible_engine:2.6::el7ansiblebefore 0:2.6.11-1.el7ae0:2.6.11-1.el7ae
Red Hat:ansible_engine:2.7::el7ansiblebefore 0:2.7.5-1.el7ae0:2.7.5-1.el7ae
Red Hat:openstack:13::el7openstack-ec2-apibefore 0:6.0.1-0.20181123223255.1e25260.el7ost0:6.0.1-0.20181123223255.1e25260.el7ost
Red Hat:openstack:13::el7openstack-manilabefore 1:6.0.2-5.el7ost1:6.0.2-5.el7ost
Red Hat:openstack:13::el7openstack-manila-sharebefore 1:6.0.2-5.el7ost1:6.0.2-5.el7ost

+96

Other highest-scoring records for the same primary product.

  • CVE-2014-4678The safe_eval function in Ansible before 1.6.4 does not properly restrict the code subset, which allows remote attackers to execute arbitrar
    41Plan
  • CVE-2014-4657The safe_eval function in Ansible before 1.5.4 does not properly restrict the code subset, which allows remote attackers to execute arbitrar
    40Plan
  • CVE-2014-4967Multiple argument injection vulnerabilities in Ansible before 1.6.7 allow remote attackers to execute arbitrary code by leveraging access to
    40Plan
  • CVE-2014-4966Ansible before 1.6.7 does not prevent inventory data with "{{" and "lookup" substrings, and does not prevent remote data with "{{" substring
    40Plan
  • CVE-2017-7550A flaw was found in the way Ansible (2.3.x before 2.3.3, and 2.4.x before 2.4.1) passed certain parameters to the jenkins_plugin module.
    40Plan
  • CVE-2016-8628Ansible before version 2.2.0 fails to properly sanitize fact variables sent from the Ansible controller.
    37Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:ansible2.7.9-r0 · Alpine:v3.10Package registry (OSV)
alpine:ansible-base2.7.9-r0 · Alpine:v3.13Package registry (OSV)
debian:ansible2.7.6+dfsg-1 · Debian:12Package registry (OSV)
opensuse:ansible2.7.8-bp150.3.6.1 · openSUSE:Leap 15.0Package registry (OSV)
opensuse:ansible-1010.6.0-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:ansible-1111.11.0-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:ansible-1212.2.0-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:ansible-1313.7.0-1.1 · openSUSE:TumbleweedPackage registry (OSV)
opensuse:ansible-99.8.0-1.1 · openSUSE:TumbleweedPackage registry (OSV)
PyPI:ansible2.5.14Package registry (OSV)
PyPI:ansible2.6.11Package registry (OSV)
PyPI:ansible2.7.5Package registry (OSV)
red hat:ansible0:2.5.14-1.el7ae · Red Hat:ansible_engine:2.5::el7Package registry (OSV)
red hat:ansible-doc0:2.5.14-1.el7ae · Red Hat:ansible_engine:2.5::el7Package registry (OSV)
red hat:openstack-ec2-api0:6.0.1-0.20181123223255.1e25260.el7ost · Red Hat:openstack:13::el7Package registry (OSV)
red hat:openstack-manila1:6.0.2-5.el7ost · Red Hat:openstack:13::el7Package registry (OSV)
red hat:openstack-manila-share1:6.0.2-5.el7ost · Red Hat:openstack:13::el7Package registry (OSV)
red hat:python-barbicanclient0:4.6.0-2.el7ost · Red Hat:openstack:13::el7Package registry (OSV)
red hat:python-openstackclient0:3.14.3-2.el7ost · Red Hat:openstack:13::el7Package registry (OSV)
red hat:python-openstackclient-lang0:3.14.3-2.el7ost · Red Hat:openstack:13::el7Package registry (OSV)
red hat:python-openstacksdk0:0.11.3-2.el7ost · Red Hat:openstack:13::el7Package registry (OSV)
red hat:python2-barbicanclient0:4.6.0-2.el7ost · Red Hat:openstack:13::el7Package registry (OSV)
red hat:python2-openstackclient0:3.14.3-2.el7ost · Red Hat:openstack:13::el7Package registry (OSV)
red hat:python2-openstacksdk0:0.11.3-2.el7ost · Red Hat:openstack:13::el7Package registry (OSV)
suse:ansible2.7.8-bp150.3.6.1 · SUSE:Package Hub 12Package registry (OSV)
suse:ansible2.9.14-3.15.1 · SUSE:HPE Helion OpenStack 8Package registry (OSV)
suse:ardana-ansible8.0+git.1596735237.54109b1-3.77.1 · SUSE:HPE Helion OpenStack 8Package registry (OSV)
suse:ardana-cinder8.0+git.1596129856.263f430-3.43.1 · SUSE:HPE Helion OpenStack 8Package registry (OSV)
suse:ardana-glance8.0+git.1593631779.76fa9b7-3.24.1 · SUSE:HPE Helion OpenStack 8Package registry (OSV)
suse:ardana-mq8.0+git.1593618123.678c32b-3.26.1 · SUSE:HPE Helion OpenStack 8Package registry (OSV)

+7

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none
Attack vector
Network
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
None
Availability impact
None

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

nvd-primary

Root cause

The extension requests broader permissions than its function needs and sends the data it collects out for purposes beyond its stated function.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

json
{  "permissions": ["tabs", "<all_urls>"],  "background": { "service_worker": "analytics.js" }}

Fixed

json
{  "permissions": ["activeTab"],  "host_permissions": ["https://yildiz.example/*"]}

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

All records