VulnerabilityModified
CVE-2016-4864
H2O versions 2.0.3 and earlier and 2.1.0-beta2 and earlier allows remote attackers to cause a denial-of-service (DoS) via format string specifiers in a template file via fastcgi, mruby, proxy, redirect or reproxy.
HIGH 7.5EPSS 1.80%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.80%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
H2O versions 2.0.3 and earlier and 2.1.0-beta2 and earlier allows remote attackers to cause a denial-of-service (DoS) via format string specifiers in a template file via fastcgi, mruby, proxy, redirect or reproxy.
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.80% probability · 77th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-134
- Affected
- dena/h2o
- Source
- vultures@jpcert.or.jp
References
- https://github.com/h2o/h2o/issues/1077Patch, Third Party Advisory
- https://jvn.jp/en/jp/JVN94779084/index.htmlThird Party Advisory, VDB Entry
- https://github.com/h2o/h2o/issues/1077Patch, Third Party Advisory
- https://jvn.jp/en/jp/JVN94779084/index.htmlThird Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.