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CVE-2017-9841

PHPUnit Command Injection

9.8 CRITICALActively exploited (CISA KEV)EPSS 100.0%
  1. Published27 Jun 2017
  2. Added to CISA KEV15 Feb 2022
  3. Remediation due15 Aug 2022
Actively exploited (CISA KEV)

PHPUnit allows remote attackers to execute arbitrary PHP code via HTTP POST data beginning with a "<?php " substring, as demonstrated by an attack on a site with an exposed /vendor folder, i.e., external access to the /vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php URI.

Added to KEV: 15 Feb 2022Federal remediation due: 15 Aug 2022

Description

Util/PHP/eval-stdin.php in PHPUnit before 4.8.28 and 5.x before 5.6.3 allows remote attackers to execute arbitrary PHP code via HTTP POST data beginning with a "<?php " substring, as demonstrated by an attack on a site with an exposed /vendor folder, i.e., external access to the /vendor/phpunit/phpunit/src/Util/PHP/eval-stdin.php URI.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Oracle Communications Diameter Signaling Router≥ 8.0.0 ≤ 8.5.0
Phpunit≥ 5.0.0 < 5.6.3 · ≤ 4.8.27

Remediation

Fixed in
Phpunit≥ 5.6.3

References

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Frequently asked

Is CVE-2017-9841 being actively exploited?

Yes. CVE-2017-9841 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 15 Feb 2022.

How severe is CVE-2017-9841?

CVE-2017-9841 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 100.0% probability of exploitation.

Which products are affected by CVE-2017-9841?

Affected products include Oracle Communications Diameter Signaling Router, Phpunit.

How do I fix CVE-2017-9841?

Upgrade affected software to a fixed version, for example Phpunit 5.6.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2017-9841 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.