SB2020090232 - Fedora 33 update for php-symfony4

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Main Vulnerability Database SB2020090232

SB2020090232 - Fedora 33 update for php-symfony4

Published: September 2, 2020 Updated: April 25, 2025

Security Bulletin ID SB2020090232
Severity
High
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Input validation error (CVE-ID: CVE-2020-15094)

The vulnerability allows a remote authenticated user to execute arbitrary code.

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.


Remediation

Install update from vendor's website.

References