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[Japanese]
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JVNDB-2017-000249
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Multiple vulnerabilities in H2O
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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
* Stack-based buffer overflow (CWE-121) - CVE-2017-10869
* A Denial-of-service (DoS) due to a flaw in outputting of the access log (CWE-118) - CVE-2017-10872
* A Denial-of-service (DoS) due to a flaw in processing HTTP/2 header (CWE-20) - CVE-2017-10908
Kazuho Oku reported this vulnerability to IPA to notify users of its solution through JVN. JPCERT/CC and Kazuho Oku coordinated under the Information Security Early Warning Partnership.
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CVSS V3 Severity:
Base Metrics 5.3 (Medium) [IPA Score]
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: Low
CVSS V2 Severity:
Base Metrics 5.0 (Medium) [IPA Score]
- Access Vector: Network
- Access Complexity: Low
- Authentication: None
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: Partial
The above CVSS base scores have been assigned for CVE-2017-10868.
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CVSS V3 Severity:
Base Metrics:
3.7 (Low) [IPA Score]
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: Low
CVSS V2 Severity:Base Metrics:
4.3 (Medium)
[IPA Score]
- Access Vector: Network
- Access Complexity: Medium
- Authentication: None
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: Partial
The above CVSS base scores have been assigned for CVE-2017-10869.
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CVSS V3 Severity:
Base Metrics:
3.1 (Low) [IPA Score]
- Attack Vector: Network
- Attack Complexity: High
- Privileges Required: Low
- User Interaction: None
- Scope: Unchanged
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: Low
CVSS V2 Severity:Base Metrics:
3.5 (Low)
[IPA Score]
- Access Vector: Network
- Access Complexity: Medium
- Authentication: Single
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: Partial
The above CVSS base scores have been assigned for CVE-2017-10872.
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CVSS V3 Severity:
Base Metrics:
5.3 (Medium) [IPA Score]
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: None
- User Interaction: None
- Scope: Unchanged
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: Low
CVSS V2 Severity:Base Metrics:
5.0 (Medium)
[IPA Score]
- Access Vector: Network
- Access Complexity: Low
- Authentication: None
- Confidentiality Impact: None
- Integrity Impact: None
- Availability Impact: Partial
The above CVSS base scores have been assigned for CVE-2017-10908.
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Kazuho Oku
- 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)
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A denial-of-service (DoS) attack to a server may be conducted by an unauthenticated remote attacker.
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[Update the Software]
Update to the latest version according to the information provided by the developer.
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Kazuho Oku
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- Improper Input Validation(CWE-20) [IPA Evaluation]
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- CVE-2017-10868
- CVE-2017-10869
- CVE-2017-10872
- CVE-2017-10908
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- JVN : JVN#84182676
- National Vulnerability Database (NVD) : CVE-2017-10868
- National Vulnerability Database (NVD) : CVE-2017-10869
- National Vulnerability Database (NVD) : CVE-2017-10872
- National Vulnerability Database (NVD) : CVE-2017-10908
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- [2017/12/18]
Web page was published
- [2018/04/04]
References : Contents were added
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