Vulnerability in Red Hat Undertow

CVE-2017-12165

It was discovered that Undertow before 1.4.17, 1.3.31 and 2.0.0 processes http request headers with unusual whitespaces which can cause possible http request smuggling.

Vulnerability class: HTTP Request Smuggling

EPSS: 0.019 (77.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 2.6 (Low). Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2017-12165?
CVE-2017-12165 is a low-severity vulnerability in Red Hat Undertow, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 2.6/10. Published 2018-07-27.
How severe is CVE-2017-12165?
Low severity. CVSS v3 base score is 2.6 out of 10.