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ubuntucveUbuntu.comUB:CVE-2018-14641
HistorySep 18, 2018 - 12:00 a.m.

CVE-2018-14641

2018-09-1800:00:00
ubuntu.com
ubuntu.com
8

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

7.1 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

0.004 Low

EPSS

Percentile

71.7%

A security flaw was found in the ip_frag_reasm() function in
net/ipv4/ip_fragment.c in the Linux kernel from 4.19-rc1 to 4.19-rc3
inclusive, which can cause a later system crash in ip_do_fragment(). With
certain non-default, but non-rare, configuration of a victim host, an
attacker can trigger this crash remotely, thus leading to a remote
denial-of-service.

Notes

Author Note
sbeattie this vulnerability is a result of the fix for CVE-2018-5391/FragmentSmack; however, an alternative fix for CVE-2018-5391 was to revert c2a936600f78aea00d3312ea4b66a79a4619f9b4, which is what the Ubuntu kernels used.

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

7.1 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

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

0.004 Low

EPSS

Percentile

71.7%