CVE-2020-36323

Description

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.

Category

8.2
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.10%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/rust-lang/rust/issues/80335 third party advisory patch
https://github.com/rust-lang/rust/pull/81728 third party advisory patch
https://github.com/rust-lang/rust/pull/81728#issuecomment-821549174 third party advisory patch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CZ337CM4GFJLRDFVQCGC7J25V65JXOG5/ vendor advisory
https://github.com/rust-lang/rust/pull/81728#issuecomment-824904190 third party advisory patch
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VZG65GUW6Z2CYOQHF7T3TB5CZKIX6ZJE/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TFUO3URYCO73D2Q4WYJBWAMJWGGVXQO4/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-36323?
CVE-2020-36323 has been scored as a high severity vulnerability.
How to fix CVE-2020-36323?
To fix CVE-2020-36323, 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-2020-36323 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-36323 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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