Resource exhaustion in Activesupport Project
CVE-2023-22796
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.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.017 (76.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
- Activesupport Project
- Https://github.com/rails/rails — versions 6.1.7.1, 7.0.4.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- discuss.rubyonrails.org/t/cve-2023-22796-possible-redos-based-dos-vulnerability… (Patch, Vendor Advisory)
- www.debian.org/security/2023/dsa-5372 (vendor-advisory)
- security.netapp.com/advisory/ntap-20240202-0009/
Frequently asked questions
- What is CVE-2023-22796?
- CVE-2023-22796 is a high-severity vulnerability in Activesupport Project, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2023-02-09.
- How severe is CVE-2023-22796?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-22796 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.