Japan Vulnerability NotesJVN:84182676JVN#84182676: Multiple vulnerabilities in H2O
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.002 Low
EPSS
Percentile
55.1%
H2O is an open source web server software. H2O contains multiple vulnerabilities listed below.
A Denial-of-service (DoS) due to a flaw in processing HTTP/1 header (CWE-20) - CVE-2017-10868
| Version | Vector | Score |
|---|---|---|
| CVSS v3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | Base Score: 5.3 |
| CVSS v2 | AV:N/AC:L/Au:N/C:N/I:N/A:P | Base Score: 5.0 |
Stack-based buffer overflow (CWE-121) - CVE-2017-10869
| Version | Vector | Score |
|---|---|---|
| CVSS v3 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L | Base Score: 3.7 |
| CVSS v2 | AV:N/AC:M/Au:N/C:N/I:N/A:P | Base Score: 4.3 |
A Denial-of-service (DoS) due to a flaw in outputting of the access log (CWE-118) - CVE-2017-10872
| Version | Vector | Score |
|---|---|---|
| CVSS v3 | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L | Base Score: 3.1 |
| CVSS v2 | AV:N/AC:M/Au:S/C:N/I:N/A:P | Base Score: 3.5 |
A Denial-of-service (DoS) due to a flaw in processing HTTP/2 header (CWE-20) - CVE-2017-10908
| Version | Vector | Score |
|---|---|---|
| CVSS v3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | Base Score: 5.3 |
| CVSS v2 | AV:N/AC:L/Au:N/C:N/I:N/A:P | Base Score: 5.0 |
Impact
A denial-of-service (DoS) attack to a server may be conducted by an unauthenticated remote attacker.
Solution
Update the Software
Update to the latest version according to the information provided by the developer.
Products Affected
- H2O version 2.2.2 and earlier (CVE-2017-10868, CVE-2017-10869)
- H2O version 2.2.3 and earlier (CVE-2017-10872, CVE-2017-10908)
Related
5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
0.002 Low
EPSS
Percentile
55.1%