CVE-2023-22796

Description

A regular expression based DoS vulnerability in Active Support <6.1.7.1 and <7.0.4.1. A specially crafted string passed to the underscore method can cause the regular expression engine to enter a state of catastrophic backtracking. This can cause the process to use large amounts of CPU and memory, leading to a possible DoS vulnerability.

Categories

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 1.50% Top 20%
Vendor Advisory debian.org Vendor Advisory rubyonrails.org
Affected: n/a https://github.com/rails/rails
Published at:
Updated at:

References

Link Tags
https://discuss.rubyonrails.org/t/cve-2023-22796-possible-redos-based-dos-vulnerability-in-active-supports-underscore/82116 patch vendor advisory
https://www.debian.org/security/2023/dsa-5372 vendor advisory
https://security.netapp.com/advisory/ntap-20240202-0009/

Frequently Asked Questions

What is the severity of CVE-2023-22796?
CVE-2023-22796 has been scored as a high severity vulnerability.
How to fix CVE-2023-22796?
To fix CVE-2023-22796, 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-2023-22796 being actively exploited in the wild?
It is possible that CVE-2023-22796 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-22796?
CVE-2023-22796 affects n/a https://github.com/rails/rails.
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