Vulnerability in Dns-Packet Project
CVE-2021-23386
This affects the package dns-packet before 5.2.2. It creates buffers with allocUnsafe and does not always fill them before forming network packets. This can expose internal application memory over unencrypted network when querying crafted invalid domain names.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L.
EPSS exploit prediction
EPSS: 0.014 (72.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 72.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
- Dns-Packet Project
- Dns-Packet — versions unspecified
Weakness classification (CWE)
Public proof-of-concept exploits
References
- snyk.io/vuln/SNYK-JS-DNSPACKET-1293563 (Patch, Third Party Advisory)
- snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1295719 (Patch, Third Party Advisory)
- hackerone.com/bugs (Permissions Required, Third Party Advisory)
- github.com/mafintosh/dns-packet/commit/25f15dd0fedc53688b25fd053ebbdffe3d5c1c56 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-23386?
- CVE-2021-23386 is a high-severity vulnerability in Dns-Packet Project, classified under CWE-909. CVSS score: 7.7/10. Published 2021-05-20.
- How severe is CVE-2021-23386?
- High severity. CVSS v3 base score is 7.7 out of 10.
- Is CVE-2021-23386 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.