Arbitrary Code Execution Affecting symfony/symfony package, versions >=4.2.0, <4.2.12 >=4.3.0, <4.3.8


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team

    Threat Intelligence

    EPSS
    0.99% (85th percentile)

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  • Snyk ID SNYK-PHP-SYMFONYSYMFONY-535352
  • published 22 Nov 2019
  • disclosed 13 Nov 2019
  • credit Seung Woo Yuk (xtac)

How to fix?

Upgrade symfony/symfony to version 4.2.12, 4.3.8 or higher.

Overview

symfony/symfony is a PHP framework for web applications and a set of reusable PHP components.

Affected versions of this package are vulnerable to Arbitrary Code Execution. Some strings were not properly escaped when being dumped by the VarExporter component leading to remote code execution.

CVSS Scores

version 3.1
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Snyk

Recommended
7.3 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    Low
  • Integrity (I)
    Low
  • Availability (A)
    Low
Expand this section

NVD

9.8 critical