CVE-2021-22883: fedoraproject fedora Uncontrolled Resource Consumption
Vulnerability summary
CVE-2021-22883 is a high (CVSS 7.8) Uncontrolled Resource Consumption vulnerability in fedoraproject fedora. EPSS estimates a 77.39% chance of exploitation in the next 30 days, higher than 99.5% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 23 · Related 11Timeline
- 03-03-2021PublishedVulnerability first disclosed.
- 30-04-2025Last modifiedVulnerability information updated.
Description
Node.js before 10.24.0, 12.21.0, 14.16.0, and 15.10.0 is vulnerable to a denial of service attack when too many connection attempts with an 'unknownProtocol' are established. This leads to a leak of file descriptors. If a file descriptor limit is configured on the system, then the server is unable to accept new connections and prevent the process also from opening, e.g. a file. If no file descriptor limit is configured, then this lead to an excessive memory usage and cause the system to run out of memory.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
77.39%
Chance of exploitation in the next 30 days
Percentile
100%
Versus all other CVEs
30-day change
+3.03 pp
From 74.35% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-400Uncontrolled Resource ConsumptionThe product does not properly control the allocation and maintenance of a limited resource.
- CWE-772Missing Release of Resource after Effective LifetimeThe product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed.
Affected systems
Oracle5 products
- graalvmEOL19.3.5 | 20.3.1.2 | 21.0.0.2
- jd_edwards_enterpriseone_tools< 9.2.6.0
- mysql_cluster≤ 8.0.25
- nosql_database< 20.3
- peoplesoft_enterprise_peopletools8.58 | 8.59
Nodejs2 products
Alpine1 product
- nodejs< 12.21.0-r0 | < 14.16.0-r0
Debian1 product
- nodejs< 12.21.0~dfsg-1
Fedoraproject1 product
- fedoraEOL32 | 33 | 34
Netapp1 product
Siemens1 product
Ubuntu1 product
- nodejsAll versions (No fix recorded) | < 10.19.0~dfsg-3ubuntu1.2
8 vendors · 13 products
References
15 links- nodejs.org/en/blog/vulnerability/february-2021-security-releases/X Refsource MISCREPORTPatchRelease NotesVendor Advisory
