Vulnerability in Golang Go
CVE-2021-33195
Go before 1.15.13 and 1.16.x before 1.16.5 has functions for DNS lookups that do not validate replies from DNS servers, and thus a return value may contain an unsafe injection (e.g., XSS) that does not conform to the RFC1035 format.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.032 (87.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- groups.google.com/g/golang-announce (Third Party Advisory)
- groups.google.com/g/golang-announce/c/RgCMkAEQjSI (Exploit, Patch, Third Party Advisory)
- security.netapp.com/advisory/ntap-20210902-0005/ (Third Party Advisory)
- security.gentoo.org/glsa/202208-02 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-33195?
- CVE-2021-33195 is a high-severity vulnerability in Golang Go, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 7.3/10. Published 2021-08-02.
- How severe is CVE-2021-33195?
- High severity. CVSS v3 base score is 7.3 out of 10.
- Is CVE-2021-33195 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.