CVE-2020-15094

HIGH EPSS 85.9%
Published Sep 2, 20205y ago · Modified Jun 17, 20262w ago
8.8 CVSS 3.1
High
Find Similar
Published Sep 2, 2020 5y ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
85.9% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-212

Affected Products 6

VendorProductVersionRange
sensiolabshttpclient*≥4.4.0  –  <4.4.13
sensiolabshttpclient*≥5.1.0  –  <5.1.5
sensiolabssymfony*≥4.4.0  –  <4.4.13
sensiolabssymfony*≥5.1.0  –  <5.1.5
fedoraprojectfedora32any
fedoraprojectfedora33any

References 6

  • github.com https://github.com/symfony/symfony/commit/d9910e0b33a2e0f993abff41c6fbc86951b66d78
    PatchThird Party Advisory
  • github.com https://github.com/symfony/symfony/security/advisories/GHSA-754h-5r27-7x3r
    Third Party Advisory
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HNGUWOEETOFVH4PN3I3YO4QZHQ4AUKF3/
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VAQJXAKWPMWB7OL6QPG2ZSEQZYYPU5RC/
  • packagist.org https://packagist.org/packages/symfony/http-kernel
    ProductThird Party Advisory
  • packagist.org https://packagist.org/packages/symfony/symfony
    ProductThird Party Advisory

Remediation

  • github.com https://github.com/symfony/symfony/commit/d9910e0b33a2e0f993abff41c6fbc86951b66d78
    PatchThird Party Advisory