Use After Free in Actix Actix-Codec

CVE-2020-35902

An issue was discovered in the actix-codec crate before 0.3.0-beta.1 for Rust. There is a use-after-free in Framed.

Vulnerability class: Use-After-Free

EPSS: 0.016 (73.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Actix Actix-codec
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, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-35902?: CVE-2020-35902 is a critical-severity vulnerability in Actix Actix-Codec, classified under Use After Free. CVSS score: 9.8/10. Published 2020-12-31.
How severe is CVE-2020-35902?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2020-35902 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.