CVE-2017-9442

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2017-06-05 · updated 2026-06-17
Weakness: CWE-94

Description

BigTree CMS through 4.2.18 allows remote authenticated users to execute arbitrary code by uploading a crafted package containing a PHP web shell, related to extraction of a ZIP archive to filename patterns such as cache/package/xxx/yyy.php. This issue exists in core\admin\modules\developer\extensions\install\unpack.php and core\admin\modules\developer\packages\install\unpack.php. NOTE: the vendor states "You must implicitly trust any package or extension you install as they all have the ability to write PHP files.

Affected products

Bigtreecms Bigtree Cms: through 4.2.18

References

https://github.com/bigtreecms/BigTree-CMS/issues/291
https://github.com/bigtreecms/BigTree-CMS/issues/291

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