Vulnerability · Published Apr 11, 2021 · Assigned by mitre
CVE-2020-36317
High 7.5
In plain English
A high-severity security flaw in the rustc package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 74% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.5%top 25.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | rustc | 1.53.0+dfsg1-1 | DEBIAN-CVE-2020-36317 |
| Debian:13 | rustc | 1.53.0+dfsg1-1 | DEBIAN-CVE-2020-36317 |
| Debian:14 | rustc | 1.53.0+dfsg1-1 | DEBIAN-CVE-2020-36317 |
| Rocky Linux:8 | rust | 0:1.49.0-1.module+el8.4.0+416+259a129a | RLSA-2021:1935 |
| Rocky Linux:8 | rust-toolset | 0:1.49.0-1.module+el8.4.0+416+259a129a | RLSA-2021:1935 |
Affected products (as reported)
References
- https://github.com/rust-lang/rust/issues/78498 x_refsource_MISC
- https://github.com/rust-lang/rust/pull/78499 x_refsource_MISC