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GHSA-6xcx-gx7r-rccj
No affected components available
Summary
In the /license/ endpoint, the detailed view key is not properly validated and sanitized, which can result in a potential cross-site scripting (XSS) vulnerability when attempting to access a detailed license view that does not exist.
Details
In the /license/ endpoint, the license_details_view function is vulnerable to a potential cross-site scripting (XSS) attack due to inadequate validation and sanitization of the key parameter. This vulnerability arises when attempting to access a key with malicious javascript.
def license_details_view(request, key):
"""
Display all available information about a given license `key` followed by
the full license text.
"""
licenses = get_licenses()
try:
data = saneyaml.dump(licenses[key].to_dict())
text = licenses[key].text
except KeyError:
return HttpResponseNotFound(f"License {key} not found.") # Leads to cross-site scripting when key is malicious javascript
return HttpResponse(f"<pre>{data}</pre><hr><pre>{text}</pre>")
PoC
- Access following endpoint on scancode.io instance: http://localhost/license/%3Cscript%3Ealert(document.cookie);%3C/script%3E/
Impact
Attackers can exploit the vulnerability to inject malicious scripts into the response generated by the license_details_view function. When unsuspecting users visit the page, their browsers will execute the injected scripts, leading to unauthorized actions, session hijacking, or stealing sensitive information.
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. The attacker needs the user to perform some action, like clicking a link. The vulnerability can affect other systems as well, not just the initial system. There is a low impact on the confidentiality of the information. There is a low impact on the integrity of the data.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
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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