Input validation error in magento-lts - CVE-2021-21426
Published: April 21, 2021
Vulnerability identifier: #VU52455
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-21426
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to delete files on the system.
The vulnerability exists due to insufficient validation of stream names within the "lib/Zend/Http/Response/Stream.php". A remote attacker can pass specially crafted input to the application and delete arbitrary files on the system.
Affected software
magento-lts
How to mitigate CVE-2021-21426
Install updates from vendor's website.
magento-lts - addressed in versions 19.4.13, 20.0.10