CVE-2019-18889: Symfony Unsafe Cache Serialization Could Enable RCE

CVE-2019-18889 · Severity: low · CVSS 3.1 · Published 2019-12-02

Symfony Unsafe Cache Serialization Could Enable RCE

Technologies: symfony/cache (Packagist), symfony/symfony (Packagist). Vendors: Packagist.

Quick answers

Is CVE-2019-18889 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2019-18889 being exploited in the wild.
How severe is CVE-2019-18889?
Low severity, with a CVSS score of 3.1, published 2 December 2019.
Which products and versions are affected?
symfony/cache (Packagist) ECOSYSTEM:introduced=3.1.0,fixed=3.4.35; symfony/symfony (Packagist) ECOSYSTEM:introduced=3.1.0,fixed=3.4.35.
Is there a fix for CVE-2019-18889?
Yes. symfony/cache (Packagist): upgrade to 3.4.35 or later; symfony/symfony (Packagist): upgrade to 3.4.35 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2019-18889?
Check whether you run symfony/cache (Packagist) or symfony/symfony (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • symfony/cache (Packagist): upgrade to 3.4.35 or later
    composer require symfony/cache:^3.4.35
  • symfony/symfony (Packagist): upgrade to 3.4.35 or later
    composer require symfony/symfony:^3.4.35

Affected products

  • symfony/cache (Packagist) ECOSYSTEM:introduced=3.1.0,fixed=3.4.35
  • symfony/symfony (Packagist) ECOSYSTEM:introduced=3.1.0,fixed=3.4.35

Identifiers

  • CVE-2019-18889
  • GHSA-79gr-58r3-pwm3

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