CVE-2021-38196

Public Exploit

Description

An issue was discovered in the better-macro crate through 2021-07-22 for Rust. It intentionally demonstrates that remote attackers can execute arbitrary code via proc-macros, and otherwise has no legitimate purpose.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 3.36% Top 15%
Third-Party Advisory githubusercontent.com Third-Party Advisory rustsec.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://rustsec.org/advisories/RUSTSEC-2021-0077.html issue tracking patch exploit third party advisory
https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/better-macro/RUSTSEC-2021-0077.md third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-38196?
CVE-2021-38196 has been scored as a critical severity vulnerability.
How to fix CVE-2021-38196?
To fix CVE-2021-38196, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-38196 being actively exploited in the wild?
It is possible that CVE-2021-38196 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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