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GHSA-x3cc-x39p-42qx
No affected components available
Impact
As a part of this vulnerability, user was able to se code using __proto__ as a tag or attribute name.
const { XMLParser, XMLBuilder, XMLValidator} = require("fast-xml-parser");
let XMLdata = "<__proto__><polluted>hacked</polluted></__proto__>"
const parser = new XMLParser();
let jObj = parser.parse(XMLdata);
console.log(jObj.polluted) // should return hacked
Patches
The problem has been patched in v4.1.2
Workarounds
User can check for "proto" in the XML string before parsing it to the parser.
References
https://gist.github.com/Sudistark/a5a45bd0804d522a1392cb5023aa7ef7
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information.
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.
- CVE-2023-26920
fast-xml-parser before 4.1.2 allows __proto__ for Prototype Pollution.
Alias, EPSS 9.88% - CVE-2021-26920
In the Druid ingestion system, the InputSource is used for reading data from a certain data source. However, the HTTP InputSource allows authenticated users to read data from other sources than intended, such as the local file system, with the privileges of the Druid server process. This is not an elevation of privilege when users access Druid directly, since Druid also provides the Local InputSource, which allows the same level of access. But it is problematic when users interact with Druid indirectly through an application that allows users to specify the HTTP InputSource, but not the Local InputSource. In this case, users could bypass the application-level restriction by passing a file URL to the HTTP InputSource.
Alias, EPSS 9.88% - EUVD-2021-1614Alias
- EUVD-2023-1910Alias
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