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huaweiHuawei TechnologiesHUAWEI-SA-20190123-01-LINUX
HistoryJan 23, 2019 - 12:00 a.m.

Security Advisory - FragmentSmack Vulnerability in Linux Kernel

2019-01-2300:00:00
Huawei Technologies
www.huawei.com
39

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

7.8 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

0.019 Low

EPSS

Percentile

88.1%

There is a DoS vulnerability in the Linux Kernel versions 3.9+ known as a FragmentSmack attack. Remote attackers could send fragmented IPv4 or IPv6 packets to the affected device to trigger time and calculation reassembly algorithms that could consume excessive CPU resources, resulting in a DoS condition. (Vulnerability ID: HWPSIRT-2018-08115)

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2018-5391.

Huawei has released software updates to fix this vulnerability. This advisory is available at the following link:

http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20190123-01-linux-en

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

7.8 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

0.019 Low

EPSS

Percentile

88.1%