Vulnerability · Published Dec 25, 2020 · Assigned by mitre
CVE-2020-35711
High 7.5
In plain English
A high-severity security flaw in the rust-arc-swap package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 76% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)7.5High
Exploit odds (30 days)1.6%top 23.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An issue has been discovered in the arc-swap crate before 0.4.8 (and 1.x before 1.1.0) for Rust. Use of arc_swap::access::Map with the Constant test helper (or with a user-supplied implementation of the Access trait) could sometimes lead to dangling references being returned by the map.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | rust-arc-swap | 0.4.8-1 | DEBIAN-CVE-2020-35711 |
| Debian:13 | rust-arc-swap | 0.4.8-1 | DEBIAN-CVE-2020-35711 |
| Debian:14 | rust-arc-swap | 0.4.8-1 | DEBIAN-CVE-2020-35711 |
| Ubuntu:22.04:LTS | rust-arc-swap | no fix listed | UBUNTU-CVE-2020-35711 |
| Ubuntu:24.04:LTS | rust-arc-swap | no fix listed | UBUNTU-CVE-2020-35711 |
| Ubuntu:25.10 | rust-arc-swap | no fix listed | UBUNTU-CVE-2020-35711 |
| Ubuntu:26.04:LTS | rust-arc-swap | no fix listed | UBUNTU-CVE-2020-35711 |
| Ubuntu:26.10 | rust-arc-swap | no fix listed | UBUNTU-CVE-2020-35711 |
Affected products (as reported)
References
- https://github.com/vorner/arc-swap/issues/45 x_refsource_MISC
- https://rustsec.org/advisories/RUSTSEC-2020-0091.html x_refsource_MISC