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Japan Vulnerability NotesJVN:94779084

HistorySep 15, 2016 - 12:00 a.m.

JVN#94779084: H2O use of externally-controlled format string

2016-09-1500:00:00

Japan Vulnerability Notes

jvn.jp

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.001

Percentile

49.6%

JSON

H2O is an open source web server software. H2O uses externally-controlled format strings (CWE-134) in the code which output error logs.

Impact

An unauthenticated remote attacker may cause a denial-of-service (DoS) condition.

Solution

Update the Software
Update to the latest version according to the information provided by the developer.

Products Affected

H2O version 2.0.3 and earlier
H2O version 2.1.0-beta2 and earlier

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.001

Percentile

49.6%

JSON

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