CVE-2020-1737: Path Traversal
First published: Wed Feb 12 2020(Updated: )
A flaw was found in Ansible 2.7.17 and prior, 2.8.9 and prior, and 2.9.6 and prior when using the Extract-Zip function from the win_unzip module as the extracted file(s) are not checked if they belong to the destination folder. An attacker could take advantage of this flaw by crafting an archive anywhere in the file system, using a path traversal. This issue is fixed in 2.10.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Redhat Ansible Engine | <2.7.17 | |
| Redhat Ansible Engine | >=2.8.0<2.8.9 | |
| Redhat Ansible Engine | >=2.9.0<2.9.6 | |
| Redhat Ansible Tower | <=3.3.4 | |
| Redhat Ansible Tower | >=3.4.0<=3.4.5 | |
| Redhat Ansible Tower | >=3.5.0<=3.5.5 | |
| Redhat Ansible Tower | >=3.6.0<=3.6.3 | |
| redhat/ansible-engine | <2.7.17 | 2.7.17 |
| redhat/ansible-engine | <2.8.11 | 2.8.11 |
| redhat/ansible-engine | <2.9.7 | 2.9.7 |
| pip/ansible | >=0<2.7.17 | 2.7.17 |
| pip/ansible | >=2.9.0a1<2.9.6 | 2.9.6 |
| pip/ansible | >=2.8.0a1<2.8.9 | 2.8.9 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2020-1737
- https://github.com/ansible/ansible/issues/67795
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1737
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FWDK3QUVBULS3Q3PQTGEKUQYPSNOU5M3/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QT27K5ZRGDPCH7GT3DRI3LO4IVDVQUB7/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U3IMV3XEIUXL6S4KPLYYM4TVJQ2VNEP2/
- https://security.gentoo.org/glsa/202006-11
- https://github.com/ansible/ansible/pull/67799
- https://github.com/advisories/GHSA-893h-35v4-mxqx (Advisory)
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1805329
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1805328
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1802154#c4
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1807877
- https://access.redhat.com/errata/RHSA-2020:1541
- https://access.redhat.com/errata/RHSA-2020:1542
- https://access.redhat.com/errata/RHSA-2020:1543
- https://access.redhat.com/errata/RHSA-2020:1544
- https://access.redhat.com/security/cve/cve-2020-1737
- https://bugzilla.redhat.com/show_bug.cgi?id=1802154
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FWDK3QUVBULS3Q3PQTGEKUQYPSNOU5M3/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QT27K5ZRGDPCH7GT3DRI3LO4IVDVQUB7/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3IMV3XEIUXL6S4KPLYYM4TVJQ2VNEP2/
- https://github.com/samdoran/ansible/commit/1de638b4d38d6d916588e2ad48d01f90dab8c36d
- https://github.com/samdoran/ansible/commit/aaf549d7870b8687209a3282841b59207735b676
- https://github.com/samdoran/ansible/commit/b60aa26e2313a8d52c0e0d3fd01696e797605b72
- https://github.com/pypa/advisory-database/tree/main/vulns/ansible/PYSEC-2020-9.yaml
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FWDK3QUVBULS3Q3PQTGEKUQYPSNOU5M3
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QT27K5ZRGDPCH7GT3DRI3LO4IVDVQUB7
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U3IMV3XEIUXL6S4KPLYYM4TVJQ2VNEP2
Frequently Asked Questions
What is CVE-2020-1737?
CVE-2020-1737 is a vulnerability found in Ansible 2.7.17 and prior, 2.8.9 and prior, and 2.9.6 and prior when using the Extract-Zip function from the win_unzip module as the extracted file(s) are not checked if they belong to the destination folder.
How severe is CVE-2020-1737?
CVE-2020-1737 has a severity rating of 7.8 (high).
How can an attacker exploit CVE-2020-1737?
An attacker could take advantage of CVE-2020-1737 by crafting a malicious archive file.
Which versions of Ansible are affected by CVE-2020-1737?
Ansible versions 2.7.17 and prior, 2.8.9 and prior, and 2.9.6 and prior are affected by CVE-2020-1737.
Are there any remedies or fixes available for CVE-2020-1737?
Yes, for Red Hat users, updating to Ansible version 2.7.18, 2.8.11, or 2.9.7 will fix the vulnerability. For pip installation, updating to Ansible version 2.7.18, 2.8.10, or 2.9.7 will resolve the issue.
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