Remote Code Execution
Remote code execution can lead to a loss of data, impact all 3 in CIA.
Such vulnerabilities mostly occur due to misconfigurations in server side implementations such as leading specific file types or missing sanitizations in user inputs etc..
We are going to see a few of them here.
Such vulnerabilities mostly occur due to misconfigurations in server side implementations such as leading specific file types or missing sanitizations in user inputs etc..
We are going to see a few of them here.
RCE is possible when file uploads or User input parameters are not validated properly.
One such scenario is LFI leading to RCE.
In applications where PHP is used, such exploitations are possible.
One such scenario is LFI leading to RCE.
In applications where PHP is used, such exploitations are possible.
Parameters in requests such as usernames, user agents, URL paramters are most likely vulnerable. In initial testing, try to include local files such as /etc/passwd etc.. to see if appliction is vulnerable to LFI. If so then modify the parameters to a one-liner nc pr php shell commands. such commands when executed give a reverse shell to nc server. Then attacker can navigate to temp folder to download metasploit payload and thereby have a persistent HTTP shell.
Another way of exploitation for RS/RCE is through upload of insecure files.
Files such as php rce shell,ASP for IIS applications etc.. lead to such vulnerabilities.
Applications which do not validate the uploaded files for malicious contents maorly fall for such vulnerabilities. In a few applications, security measures such as not allowing formats such as .asp other than that of known files to be restricted while executing, or having a content disposition policy while loading such files restricts execution of malicious scripts in the backend.
Files such as php rce shell,ASP for IIS applications etc.. lead to such vulnerabilities.
Applications which do not validate the uploaded files for malicious contents maorly fall for such vulnerabilities. In a few applications, security measures such as not allowing formats such as .asp other than that of known files to be restricted while executing, or having a content disposition policy while loading such files restricts execution of malicious scripts in the backend.
