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 deno_core
.
deno_core is a modern JavaScript/TypeScript runtime built with V8, Rust, and Tokio
Affected versions of this package are vulnerable to Use After Free due to the use of *const c_void
and ExternalPointer
to represent v8::External
data, effectively bypassing Rust's lifetime safety guarantees. The ExternalPointer
's reliance on the randomness of PIE address for security is insufficient, as it can be bypassed, especially in non-PIE binaries or when an attacker can derandomize the PIE address.
An attacker who can control the code executed inside the runtime can achieve arbitrary code execution on the host machine, regardless of permissions.