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GHSA-w34w-fvp3-68xm
No affected components available
Summary
The squelette parameter is vulnerable to path traversal attacks, enabling read access to arbitrary files on the server. The payload ../../../../../../etc/passwd was submitted in the squelette parameter. The requested file was returned in the application's response.
Details
File path traversal vulnerabilities arise when user-controllable data is used within a filesystem operation in an unsafe manner. Typically, a user-supplied filename is appended to a directory prefix in order to read or write the contents of a file. If vulnerable, an attacker can supply path traversal sequences (using dot-dot-slash characters) to break out of the intended directory and read or write files elsewhere on the filesystem.
PoC
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Access the below URL to see the contents of
/etc/passwd: URL with payload:https://yeswiki.net/?UrkCEO/edit&theme=margot&squelette=..%2f..%2f..%2f..%2f..%2f..%2fetc%2fpasswd&style=margot.cssSimilarly, contents of
wakka.config.phpcan be read (which contains database password) using..%2f..%2f..%2fwakka.config.phpas payload. Thus showing the severity of this issue.
Impact
This is a very serious vulnerability, allowing an attacker to access sensitive files containing configuration data, passwords, database records, log data, source code, and program scripts and binaries. Thus, leading to complete loss of confidentiality.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The vulnerability can affect other systems as well, not just the initial system. There is a high impact on the confidentiality of the information.
Exploitation activity has been observed. Apply available patches or mitigations urgently.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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