CVE-2021-41817
HighPublic PoC
Published: 01 January 2022
Published
01 January 2022
Modified
21 November 2024
KEV Added
—
Patch
—
CVSS Score v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.0050
66.2th percentile
Risk Priority
15
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-41817 is a high-severity Inefficient Regular Expression Complexity (CWE-1333) vulnerability in Ruby-Lang Date. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 33.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-2381
Vulnerability details
Date.parse in the date gem through 3.2.0 for Ruby allows ReDoS (regular expression Denial of Service) via a long string. The fixed versions are 3.2.1, 3.1.2, 3.0.2, and 2.0.1.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
ruby-lang
date
3.2.0 · ≤ 2.0.1 · 3.0.0 — 3.0.2 · 3.1.0 — 3.1.2
ruby-lang
ruby
2.6.0 — 2.6.9 · 2.7.0 — 2.7.5 · 3.0.0 — 3.0.3
redhat
software collections
all versions
redhat
enterprise linux
7.0, 8.0
fedoraproject
fedora
34, 35
debian
debian linux
10.0, 11.0, 9.0
suse
linux enterprise
12.0, 15.0
opensuse
factory
all versions
opensuse
leap
15.2
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.