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CVE-2017-7481

MEDIUM
Published 2018-07-19T13:00:00
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CVSS Score

V3.0
5.3
/10
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.037
probability
of exploitation in the wild

There is a 3.7% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.874
Higher than 87.4% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
HIGH
Availability
NONE

Description

Ansible before versions 2.3.1.0 and 2.4.0.0 fails to properly mark lookup-plugin results as unsafe. If an attacker could control the results of lookup() calls, they could inject Unicode strings to be parsed by the jinja2 templating system, resulting in code execution. By default, the jinja2 templating language is now marked as 'unsafe' and is not evaluated.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

[UNKNOWN]

ansible

Affected Versions:

ansible 2.3.1.0 ansible 2.4.0.0

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed CRITICAL

Ansible fails to properly mark lookup-plugin results as unsafe

GHSA-w578-j992-554x

Advisory Details

Ansible before versions 2.1.6.0, 2.2.3.0, 2.3.1.0, and 2.4.0.0 fails to properly mark lookup-plugin results as unsafe. If an attacker could control the results of lookup() calls, they could inject Unicode strings to be parsed by the jinja2 templating system, resulting in code execution. By default, the jinja2 templating language is now marked as 'unsafe' and is not evaluated.

Affected Packages

PyPI ansible
ECOSYSTEM: ≥2.3.0.0 <2.3.1.0
PyPI ansible
ECOSYSTEM: ≥0 <2.1.6.0
PyPI ansible
ECOSYSTEM: ≥2.2.0.0 <2.2.3.0

CVSS Scoring

CVSS Score

9.0

CVSS Vector

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

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2017-7481
WEB https://github.com/ansible/ansible/commit/fd30f5328986f9e1da434474481f32bf918a600c
WEB https://github.com/ansible/ansible/commit/f0e348f5eeb70c1fb3127d90891da43b5c0a9d29
WEB https://github.com/ansible/ansible/commit/ed56f51f185a1ffd7ea57130d260098686fcc7c2
WEB https://github.com/ansible/ansible/commit/a1886911fcf4b691130cfc70dfc5daa5e07c46a3
WEB https://web.archive.org/web/20170801122609/http://www.securityfocus.com/bid/98492
WEB https://usn.ubuntu.com/4072-1
WEB https://lists.debian.org/debian-lts-announce/2021/01/msg00023.html
WEB https://github.com/pypa/advisory-database/tree/main/vulns/ansible/PYSEC-2018-41.yaml
PACKAGE https://github.com/ansible/ansible
WEB https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7481
WEB https://access.redhat.com/errata/RHSA-2017:2524
WEB https://access.redhat.com/errata/RHSA-2017:1599
WEB https://access.redhat.com/errata/RHSA-2017:1499
WEB https://access.redhat.com/errata/RHSA-2017:1476
WEB https://access.redhat.com/errata/RHSA-2017:1334
WEB https://access.redhat.com/errata/RHSA-2017:1244

Advisory provided by GitHub Security Advisory Database. Published: September 6, 2018, Modified: May 29, 2025

References

https://access.redhat.com/errata/RHSA-2017:1599
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7481
https://access.redhat.com/errata/RHSA-2017:1334
http://www.securityfocus.com/bid/98492
https://github.com/ansible/ansible/commit/ed56f51f185a1ffd7ea57130d260098686fcc7c2
https://access.redhat.com/errata/RHSA-2017:1244
https://access.redhat.com/errata/RHSA-2017:1499
https://access.redhat.com/errata/RHSA-2017:2524
https://access.redhat.com/errata/RHSA-2017:1476
https://usn.ubuntu.com/4072-1/
https://lists.debian.org/debian-lts-announce/2021/01/msg00023.html
Published: 2018-07-19T13:00:00
Last Modified: 2024-08-05T16:04:11.540Z
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