Resource exhaustion in C-Ares Project
CVE-2020-8277
A Node.js application that allows an attacker to trigger a DNS request for a host of their choice could trigger a Denial of Service in versions < 15.2.1, < 14.15.1, and < 12.19.1 by getting the application to resolve a DNS record with a larger number of responses. This is fixed in 15.2.1, 14.15.1, and 12.19.1.
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: 0.542 (99.0th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.542 · newest: 0.542 · change: 0.000
Affected products
- C-Ares Project
- Node.js Node — versions 4.0, 5.0, 6.0
- Node.js
- Oracle Blockchain Platform
- Oracle Graalvm — versions 19.3.4, 20.3.0
- Oracle Jd Edwards Enterpriseone Tools
- Oracle MySQL Cluster
- Oracle Retail Xstore Point Of Service — versions 16.0.6, 17.0.4, 18.0.3
- Fedoraproject Fedora — versions 32, 33
Weakness classification (CWE)
Public proof-of-concept exploits
References
- hackerone.com/reports/1033107 (Permissions Required, Third Party Advisory)
- nodejs.org/en/blog/vulnerability/november-2020-security-releases/ (Patch, Vendor Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- security.gentoo.org/glsa/202012-11 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/202101-07 (vendor-advisory, Third Party Advisory)
- www.oracle.com/security-alerts/cpujan2021.html (Patch, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- www.oracle.com/security-alerts/cpuApr2021.html (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-8277?
- CVE-2020-8277 is a high-severity vulnerability in C-Ares Project, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2020-11-19.
- How severe is CVE-2020-8277?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-8277 known to be exploited?
- 13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.