CVE-2017-10993 Contao Core directory traversal vulnerability

What is CVE-2017-10993?

CVE-2017-10993 is a high-severity path traversal vulnerability in n/a, published on 21 Jul 2017. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Contao before 3.5.28 and 4.x before 4.4.1 allows remote attackers to include and execute arbitrary local PHP files via a crafted parameter in a URL, aka Directory Traversal.

Weakness: CWE-22

Which versions are affected by CVE-2017-10993?

6 open source packages ship an affected version, including contao/contao, contao/core and contao/core-bundle. It affects 1 product.

Products include Contao Contao Cms.

How do I fix CVE-2017-10993?

Upgrade contao/contao to 4.4.1 or later.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2017-10993 being exploited?

There is no known exploitation of CVE-2017-10993 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2014-1860 Deserialization in n/a Critical 9.8
• CVE-2017-16558 Contao SQL injection in the backend and listing module Critical 9.8
• CVE-2019-10641 Contao Does Not Invalidate Existing Sessions When Password Changes Critical 9.8
• CVE-2019-10643 Contao Does Not Expire Tokens Correctly Critical 9.8
• CVE-2019-10642 Contao CSRF Token Bypass High 8.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-x5g4-crxq-qxjx.