PHPStudy 2016-2018 Backdoor Remote Code Execution Vulnerability
63Vexday Risk Score
Patch soon. It has a working public exploit.
ssvc Attendcvss 9.3epss 1.2%
from disclosure to weapon0 days
Published on NVDJul 3
metasploitSep 20
exploitation probability
1.2%top 35% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
A backdoor in PHPStudy versions 2016 through 2018 allows unauthenticated remote attackers to execute arbitrary PHP code on affected installations. The backdoor listens for base64-encoded PHP payloads in the Accept-Charset HTTP header of incoming requests, decodes and executes the payload without proper validation. This leads to remote code execution as the web server user, compromising the affected system.
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
Affected products
Henan Xiaopi Security Technology Co., Ltd. · PHPStudypublic PoCs found — 1
cve_referenceraw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/multi/http/phpstudy_backdoor_rce.rbunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.