PT-2020-17533 · Rust · Actix-Http

Published 2020-01-24 · Updated 2021-08-25 · CVE-2020-35901

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions actix-http crate versions prior to 2.0.0-alpha.1

Description The issue is related to a use-after-free in BodyStream. Affected versions of the crate did not require the buffer wrapped in BodyStream to be pinned, but treated it as if it had a fixed location in memory, which may result in a use-after-free.

Recommendations For versions prior to 2.0.0-alpha.1, update to version 2.0.0-alpha.1 or later, which includes the correction by making the MessageBody trait require Unpin and modifying the poll next() function to accept Pin<&mut Self> instead of &mut self.

Exploit

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2020-35901

GHSA-V3J6-XF77-8R9C

RUSTSEC-2020-0048

Affected Products

Actix-Http

References · 8

• 🔥 https://rustsec.org/advisories/RUSTSEC-2020-0048.html · Exploit
• https://osv.dev/vulnerability/RUSTSEC-2020-0048 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-35901 · Security Note
• https://osv.dev/vulnerability/CVE-2020-35901 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-v3j6-xf77-8r9c · Vendor Advisory
• https://github.com/actix/actix-web · Note
• https://github.com/actix/actix-web/issues/1321 · Note
• https://crates.io/crates/actix-http · Note