SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2017-9841

PHPUnit Command Injection Vulnerability

KEVCRITICAL 9.8EPSS 100.0%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 15 August 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

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
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
100.00% probability · 100th percentile
CISA KEV
Listed 15 February 2022 · due 15 August 2022
Weakness
CWE-94
Affected
phpunit project/phpunit · oracle/communications diameter signaling router
Source
cve@mitre.org

CISA notes

Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2017-9841

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.