Vulnerability Description
In Symfony before versions 4.4.13 and 5.1.5, the CachingHttpClient class from the HttpClient Symfony component relies on the HttpCache class to handle requests. HttpCache uses internal headers like X-Body-Eval and X-Body-File to control the restoration of cached responses. The class was initially written with surrogate caching and ESI support in mind (all HTTP calls come from a trusted backend in that scenario). But when used by CachingHttpClient and if an attacker can control the response for a request being made by the CachingHttpClient, remote code execution is possible. This has been fixed in versions 4.4.13 and 5.1.5.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Sensiolabs | Httpclient | >= 4.4.0, < 4.4.13 |
| Sensiolabs | Symfony | >= 4.4.0, < 4.4.13 |
| Fedoraproject | Fedora | 32 |
Related Weaknesses (CWE)
References
- https://github.com/symfony/symfony/commit/d9910e0b33a2e0f993abff41c6fbc86951b66dPatchThird Party Advisory
- https://github.com/symfony/symfony/security/advisories/GHSA-754h-5r27-7x3rThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://packagist.org/packages/symfony/http-kernelProductThird Party Advisory
- https://packagist.org/packages/symfony/symfonyProductThird Party Advisory
- https://github.com/symfony/symfony/commit/d9910e0b33a2e0f993abff41c6fbc86951b66dPatchThird Party Advisory
- https://github.com/symfony/symfony/security/advisories/GHSA-754h-5r27-7x3rThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://packagist.org/packages/symfony/http-kernelProductThird Party Advisory
- https://packagist.org/packages/symfony/symfonyProductThird Party Advisory
FAQ
What is CVE-2020-15094?
CVE-2020-15094 is a vulnerability with a CVSS score of 8.0 (HIGH). In Symfony before versions 4.4.13 and 5.1.5, the CachingHttpClient class from the HttpClient Symfony component relies on the HttpCache class to handle requests. HttpCache uses internal headers like X-...
How severe is CVE-2020-15094?
CVE-2020-15094 has been rated HIGH with a CVSS base score of 8.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-15094?
Check the references section above for vendor advisories and patch information. Affected products include: Sensiolabs Httpclient, Sensiolabs Symfony, Fedoraproject Fedora.