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CVE-2020-36323

Published: 14 April 2021

In the standard library in Rust before 1.52.0, there is an optimization for joining strings that can cause uninitialized bytes to be exposed (or the program to crash) if the borrowed string changes after its length is checked.

Priority

Medium

Cvss 3 Severity Score

8.2

Score breakdown

Status

Package Release Status
rustc
Launchpad, Ubuntu, Debian
kinetic Ignored
(end of life, was needed)
focal
Released (1.53.0+dfsg1+llvm-4ubuntu1~20.04.1)
jammy
Released (1.53.0+dfsg1+llvm-4ubuntu1)
lunar Not vulnerable
(1.61.0+dfsg1-1~exp1ubuntu1)
impish Ignored
(end of life)
groovy Ignored
(end of life)
hirsute Ignored
(end of life)
trusty Needed

upstream Needs triage

xenial Needed

bionic Not vulnerable
(1.53.0+dfsg1+llvm-4ubuntu1~18.04.1)
mantic Not vulnerable
(1.67.1+dfsg0ubuntu1-0ubuntu2)

Severity score breakdown

Parameter Value
Base score 8.2
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H