Use After Free in Actix Actix-Http

CVE-2020-35901

An issue was discovered in the actix-http crate before 2.0.0-alpha.1 for Rust. There is a use-after-free in BodyStream.

Vulnerability class: Use-After-Free

EPSS: 0.014 (69.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Actix Actix-http
N/a — versions n/a

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

Artisan-Lab/Rust-memory-safety-bugs

References

cve@mitre.org (Exploit, Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-35901?: CVE-2020-35901 is a high-severity vulnerability in Actix Actix-Http, classified under Use After Free. CVSS score: 7.5/10. Published 2020-12-31.
How severe is CVE-2020-35901?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2020-35901 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.