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CVE-2020-36323

HIGHCVSS 8.2/10EPSS 2.02%

Last modified

CVE-2020-36323 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. 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.. EPSS estimates a 2.02% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
8.2/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

EPSS Probability
2.02%

78.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Rust-LangRust< 1.52.0
FedoraprojectFedora32
FedoraprojectFedora33
FedoraprojectFedora34

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-36323?
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.
How severe is CVE-2020-36323?
CVE-2020-36323 has a CVSS score of 8.2/10 (HIGH severity). The EPSS model estimates a 2.02% probability of exploitation in the next 30 days.
How do I fix CVE-2020-36323?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST