CVE-2020-36317
Published: 11 April 2021
In the standard library in Rust before 1.49.0, String::retain() function has a panic safety problem. It allows creation of a non-UTF-8 Rust string when the provided closure panics. This bug could result in a memory safety violation when other string APIs assume that UTF-8 encoding is used on the same string.
Notes
| Author | Note |
|---|---|
| litios | on trusty, the vulnerable code is in src/liballoc/string.rs. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
rustc Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(1.51.0+dfsg1+llvm-1~exp3ubuntu1~18.04.1)
|
| focal |
Released
(1.51.0+dfsg1+llvm-1~exp3ubuntu1~20.04.2)
|
|
| groovy |
Ignored
(end of life)
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Not vulnerable
(1.51.0+dfsg1+llvm-1~exp3ubuntu1)
|
|
| kinetic |
Ignored
(end of life, was needs-triage)
|
|
| lunar |
Not vulnerable
(1.61.0+dfsg1-1~exp1ubuntu1)
|
|
| mantic |
Not vulnerable
(1.67.1+dfsg0ubuntu1-0ubuntu2)
|
|
| trusty |
Needed
|
|
| upstream |
Released
(1.49.0)
|
|
| xenial |
Needed
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |