CVE-2019-18888: Input Validation
First published: Wed Nov 13 2019(Updated: )
An issue was discovered in Symfony 2.8.0 through 2.8.50, 3.4.0 through 3.4.34, 4.2.0 through 4.2.11, and 4.3.0 through 4.3.7. If an application passes unvalidated user input as the file for which MIME type validation should occur, then arbitrary arguments are passed to the underlying file command. This is related to symfony/http-foundation (and symfony/mime in 4.3.x).
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| composer/symfony/symfony | >=2.0.0<2.1.0>=2.1.0<2.2.0>=2.2.0<2.3.0>=2.3.0<2.4.0>=2.4.0<2.5.0>=2.5.0<2.6.0>=2.6.0<2.7.0>=2.7.0<2.8.0>=2.8.0<2.8.52>=3.0.0<3.1.0>=3.1.0<3.2.0>=3.2.0<3.3.0>=3.3.0<3.4.0>=3.4.0<3.4.35>=4.0.0<4.1.0>=4.1.0<4.2.0>=4.2.0<4.2.12>=4.3.0<4.3.8 | |
| composer/symfony/mime | >=4.3.0<4.3.8 | |
| composer/symfony/http-foundation | >=2.0.0<2.1.0>=2.1.0<2.2.0>=2.2.0<2.3.0>=2.3.0<2.4.0>=2.4.0<2.5.0>=2.5.0<2.6.0>=2.6.0<2.7.0>=2.7.0<2.8.0>=2.8.0<2.8.52>=3.0.0<3.1.0>=3.1.0<3.2.0>=3.2.0<3.3.0>=3.3.0<3.4.0>=3.4.0<3.4.35>=4.0.0<4.1.0>=4.1.0<4.2.0>=4.2.0<4.2.12>=4.3.0<4.3.8 | |
| SensioLabs Symfony | >=2.8.0<=2.8.50 | |
| SensioLabs Symfony | >=3.4.0<=3.4.34 | |
| SensioLabs Symfony | >=4.2.0<=4.2.11 | |
| SensioLabs Symfony | >=4.3.0<=4.3.7 | |
| Fedoraproject Fedora | =30 | |
| Fedoraproject Fedora | =31 | |
| composer/symfony/symfony | >=4.3.0<4.3.8 | 4.3.8 |
| composer/symfony/symfony | >=4.0.0<4.2.12 | 4.2.12 |
| composer/symfony/symfony | >=3.0.0<3.4.35 | 3.4.35 |
| composer/symfony/symfony | >=2.0.0<2.8.52 | 2.8.52 |
| composer/symfony/mime | >=4.3.0<4.3.8 | 4.3.8 |
| composer/symfony/http-foundation | >=4.3.0<4.3.8 | 4.3.8 |
| composer/symfony/http-foundation | >=4.0.0<4.2.12 | 4.2.12 |
| composer/symfony/http-foundation | >=3.0.0<3.4.35 | 3.4.35 |
| composer/symfony/http-foundation | >=2.0.0<2.8.52 | 2.8.52 |
| >=2.8.0<=2.8.50 | ||
| >=3.4.0<=3.4.34 | ||
| >=4.2.0<=4.2.11 | ||
| >=4.3.0<=4.3.7 | ||
| =30 | ||
| =31 |
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Reference Links
- https://symfony.com/cve-2019-18888
- https://github.com/symfony/symfony/releases/tag/v4.3.8
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DZNXRVHDQBNZQUCNRVZICPPBFRAUWUJX/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UED22BOXTL2SSFMGYKA64ZFHGLLJG3EA/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VXEAOEANNIVYANTMOJ42NKSU6BGNBULZ/
- https://symfony.com/blog/cve-2019-18888-prevent-argument-injection-in-a-mimetypeguesser
- https://symfony.com/blog/symfony-4-3-8-released
- https://nvd.nist.gov/vuln/detail/CVE-2019-18888
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-foundation/CVE-2019-18888.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/mime/CVE-2019-18888.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2019-18888.yaml
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DZNXRVHDQBNZQUCNRVZICPPBFRAUWUJX/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UED22BOXTL2SSFMGYKA64ZFHGLLJG3EA/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VXEAOEANNIVYANTMOJ42NKSU6BGNBULZ/
- https://github.com/advisories/GHSA-xhh6-956q-4q69 (Advisory)
Frequently Asked Questions
What is CVE-2019-18888?
CVE-2019-18888 is a vulnerability that allows argument injection in a MimeTypeGuesser.
What software is affected by CVE-2019-18888?
The affected software includes Symfony HttpFoundation, Symfony Mime, and Symfony itself.
How can I fix CVE-2019-18888?
To fix CVE-2019-18888, update the affected Symfony packages to versions 2.8.53, 3.4.36, 4.2.13, or 4.3.9 or higher.
What is the severity of CVE-2019-18888?
The severity of CVE-2019-18888 is medium.
Where can I find more information about CVE-2019-18888?
More information about CVE-2019-18888 can be found at the following link: https://symfony.com/cve-2019-18888
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