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CVE-2023-28756

MEDIUMCVSS 5.3/10EPSS 2.45%

Last modified

CVE-2023-28756 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. A ReDoS issue was discovered in the Time component through 0.2.1 in Ruby through 3.2.1. The Time parser mishandles invalid URLs that have specific characters. EPSS estimates a 2.45% chance of exploitation in the next 30 days.

Description

A ReDoS issue was discovered in the Time component through 0.2.1 in Ruby through 3.2.1. The Time parser mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing strings to Time objects. The fixed versions are 0.1.1 and 0.2.2.

Metrics

CVSS 3.1
5.3/10

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

EPSS Probability
2.45%

82.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Ruby-LangRuby<= 2.7.7
Ruby-LangTime0.1.0
Ruby-LangTime0.2.1
DebianDebian Linux10.0
FedoraprojectFedora36
FedoraprojectFedora37
FedoraprojectFedora38

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2023-28756?
A ReDoS issue was discovered in the Time component through 0.2.1 in Ruby through 3.2.1. The Time parser mishandles invalid URLs that have specific characters. It causes an increase in execution time for parsing strings to Time objects. The fixed versions are 0.1.1 and 0.2.2.
How severe is CVE-2023-28756?
CVE-2023-28756 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 2.45% probability of exploitation in the next 30 days.
How do I fix CVE-2023-28756?
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.

Are you affected by CVE-2023-28756?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST