THREATPORT/VULNERABILITY/CVE-2020-15094
HIGH SEVERITY

CVE-2020-15094

Httpclient vulnerability

CVSS
8.0
EPSS
3.0%
EPSS pct
86th
Exploited
No known
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.
Affected vendor
Sensiolabs
Affected product
Httpclient
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-212 — Improper Removal of Sensitive Information
Published
2020-09-02

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring low privileges, user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 3.0% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 86% of all scored CVEs.

Check your external exposure to CVE-2020-15094

  • Confirm whether Sensiolabs Httpclient is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2020-15094.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-15094

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-15094 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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