PT-2021-18542 · Unknown · Endian Trait

Published 2021-01-04 · Updated 2021-08-25 · CVE-2021-29929

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 endian trait crate through 2021-01-04

Description The issue arises when a user-provided implementation of the Endian trait panics, triggering a double-drop due to duplicated ownership of T created by ptr::read(). This double-drop can cause memory corruption in the heap.

Recommendations For versions of the endian trait crate through 2021-01-04, consider restricting the use of user-provided Endian trait implementations until a patch is available to prevent panic-induced double-drop issues. As a temporary workaround, ensure that all user-provided implementations of the Endian trait are thoroughly tested to prevent panics. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Double Free

Weakness Enumeration

CWE-415

Related Identifiers

CVE-2021-29929

GHSA-VPW8-43WM-RXW5

RUSTSEC-2021-0039

Affected Products

Endian Trait

References · 9

• 🔥 https://rustsec.org/advisories/RUSTSEC-2021-0039.html · Exploit
• https://osv.dev/vulnerability/GHSA-vpw8-43wm-rxw5 · Vendor Advisory
• https://osv.dev/vulnerability/RUSTSEC-2021-0039 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-29929 · Security Note
• https://osv.dev/vulnerability/CVE-2021-29929 · Vendor Advisory
• https://gitlab.com/myrrlyn/endian_trait/-/issues/1 · Note
• https://crates.io/crates/endian_trait · Note
• https://t.me/cvenotify/12464 · Telegram Post
• https://gitlab.com/myrrlyn/endian_trait · Note