Arbitrary PHP code execution in EMC Avamar - CVE-2017-4990
Published: June 21, 2017
Vulnerability identifier: #VU7155
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-4990
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute PHP code on the target system.
The weakness exists due to improper validation of file extensions by the file upload feature of the system maintenance page. A remote attacker can send a specially crafted HTTP request, upload a malicious file to any directory and execute arbitrary PHP code on the vulnerable system.
The weakness exists due to improper validation of file extensions by the file upload feature of the system maintenance page. A remote attacker can send a specially crafted HTTP request, upload a malicious file to any directory and execute arbitrary PHP code on the vulnerable system.
Affected software
EMC Avamar
How to mitigate CVE-2017-4990
Update to version 7.3.1 with Hotfix 276676 and 7.4.1 with Hotfix 279294.