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.
CVSS breakdown
CVSS 3.0
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Affected products
- Unknown / ansibleansible 2.3.1.0 – ansible 2.3.1.0
- Unknown / ansibleansible 2.4.0.0 – ansible 2.4.0.0
References
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2017:1599
- MISChttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7481
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2017:1334
- MISChttp://www.securityfocus.com/bid/98492
- PATCHhttps://github.com/ansible/ansible/commit/ed56f51f185a1ffd7ea57130d260098686fcc7c2
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2017:1244
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2017:1499
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2017:2524
- VENDOR_ADVISORYhttps://access.redhat.com/errata/RHSA-2017:1476
- VENDOR_ADVISORYhttps://usn.ubuntu.com/4072-1/
- MAILING_LISThttps://lists.debian.org/debian-lts-announce/2021/01/msg00023.html