Resource exhaustion in Http4s Blaze
CVE-2021-21293
blaze is a Scala library for building asynchronous pipelines, with a focus on network IO. All servers running blaze-core before version 0.14.15 are affected by a vulnerability in which unbounded connection acceptance leads to file handle e…
Vulnerability class: DoS (Denial of Service)
EPSS: 0.021 (79.9th percentile) — read the EPSS interpretation.
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.
Affected products
- Http4s Blaze — versions < 0.14.15
- Typelevel Blaze
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Third Party Advisory, x_refsource_MISC)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-21293?
- CVE-2021-21293 is a high-severity vulnerability in Http4s Blaze, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2021-02-02.
- How severe is CVE-2021-21293?
- High severity. CVSS v3 base score is 7.5 out of 10.