Use After Free in Deno
CVE-2024-27934
Deno is a JavaScript, TypeScript, and WebAssembly runtime. Starting in version 1.36.2 and prior to version 1.40.3, use of inherently unsafe `*const c_void` and `ExternalPointer` leads to use-after-free access of the underlying structure, resulting in arbitrary code execution. Use of inherently unsafe `*const c_void` and `ExternalPointer` leads to use-after-free access of the underlying structure, which is exploitable by an attacker controlling the code executed inside a Deno runtime to obtain arbitrary code execution on the host machine regardless of permissions. This bug is known to be exploitable for both `*const c_void` and `ExternalPointer` implementations. Version 1.40.3 fixes this issue.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (30.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Deno
- Denoland Deno — versions >= 1.36.2, < 1.40.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/denoland/deno/security/advisories/GHSA-3j27-563v-28wf (Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2024-27934?
- CVE-2024-27934 is a high-severity vulnerability in Deno, classified under Use After Free. CVSS score: 8.4/10. Published 2024-03-21.
- How severe is CVE-2024-27934?
- High severity. CVSS v3 base score is 8.4 out of 10.
- Is CVE-2024-27934 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.