synced 12 MIN AGO
01 Record

CVE-2017-10908

H2O version 2.2.3 and earlier allows remote attackers to cause a denial of service in the server via specially crafted HTTP/2 header.

UnratedPUBLISHEDCNA: jpcert
CNA base scoreUnratedNo CNA CVSS vector

02 Description

H2O version 2.2.3 and earlier allows remote attackers to cause a denial of service in the server via specially crafted HTTP/2 header.

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
3.63% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 89.0% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2017-12-22 14:00Z8 YR AGO
Last updated
2024-08-05 17:50Z2 YR AGO
Reserved
2017-07-04
Assigning CNA
jpcert
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-20Improper Input ValidationClass
Data version
5.1
Document digest
bbe9d5c13c8da3e29357dc5432b0e195bdb93dfb630bf90e093af2ad18fe916d

05 Affected products

VendorProductVersionsPlatforms
Kazuho OkuH2Oversion 2.2.3 and earlier—

06 References

07 Fixed in

Debian 12

  • h2o
    Fixed in 2.2.4+dfsg-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.