High severity · published Dec 22, 2017
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
7.5
CVSS
3.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.6% · higher than 89% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
H2
H2o · Dena
through 2.2.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-10908
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-10908
Third Party Advisory
https://github.com/h2o/h2o/issues/1544
Third Party Advisory
https://jvn.jp/en/jp/JVN84182676/index.html
More from H2o
7.5
CVE-2023-44487
HTTP/2 Rapid Reset Attack Vulnerability
9.8
CVE-2018-0608
Buffer overflow in H2O version 2.2.4 and earlier allows remote attackers to execute arbitrary code or cause a denial of service (DoS) via unspecified vectors
9.1
CVE-2016-7835
Use-after-free vulnerability in H2O allows remote attackers to cause a denial-of-service (DoS) or obtain server certificate private keys and possibly other information
8.2
CVE-2023-30847
H2O is an HTTP server
7.5
CVE-2024-45403
h2o is an HTTP server with support for HTTP/1.x, HTTP/2 and HTTP/3