What is the CVSS score of CVE-2020-35917?

CVE-2020-35917 has a CVSS 3.1 base score of 5.5 (Medium). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.4%.

Is there a public PoC exploit available for CVE-2020-35917?

Yes, a public proof-of-concept exploit is available for CVE-2020-35917. Prioritise patching immediately. EPSS: 0.4%.

Is there a patch available for CVE-2020-35917?

Yes, a patch is available for CVE-2020-35917. Update the affected software to the latest version immediately.

Pyo3 CVE-2020-35917

MEDIUM

Use After Free (CWE-416)

2020-12-31 cve@mitre.org

Use After Free Memory Corruption Information Disclosure Pyo3

5.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

5.5 MEDIUM

AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

CVE Published

Dec 31, 2020 - 09:15 nvd

MEDIUM 5.5

DescriptionNVD

An issue was discovered in the pyo3 crate before 0.12.4 for Rust. There is a reference-counting error and use-after-free in From<Py<T>>.

AnalysisAI

An issue was discovered in the pyo3 crate before 0.12.4 for Rust. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. An issue was discovered in the pyo3 crate before 0.12.4 for Rust. There is a reference-counting error and use-after-free in From<Py<T>>. Affected products include: Pyo3 Project Pyo3. Version information: before 0.12.4.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.