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ubuntucveUbuntu.comUB:CVE-2019-18282
HistoryJan 16, 2020 - 12:00 a.m.

CVE-2019-18282

2020-01-1600:00:00
ubuntu.com
ubuntu.com
11

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.004 Low

EPSS

Percentile

71.5%

The flow_dissector feature in the Linux kernel 4.3 through 5.x before
5.3.10 has a device tracking vulnerability, aka CID-55667441c84f. This
occurs because the auto flowlabel of a UDP IPv6 packet relies on a 32-bit
hashrnd value as a secret, and because jhash (instead of siphash) is used.
The hashrnd value remains the same starting from boot time, and can be
inferred by an attacker. This affects net/core/flow_dissector.c and related
code.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux<Β 4.15.0-74.84UNKNOWN
ubuntu19.04noarchlinux<Β 5.0.0-38.41UNKNOWN
ubuntu19.10noarchlinux<Β 5.3.0-24.26UNKNOWN
ubuntu16.04noarchlinux<Β 4.4.0-170.199UNKNOWN
ubuntu18.04noarchlinux-aws<Β 4.15.0-1057.59UNKNOWN
ubuntu19.10noarchlinux-aws<Β 5.3.0-1008.9UNKNOWN
ubuntu14.04noarchlinux-aws<Β 4.4.0-1059.63) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu16.04noarchlinux-aws<Β 4.4.0-1099.110UNKNOWN
ubuntu18.04noarchlinux-aws-5.0<Β 5.0.0-1023.26~18.04.1UNKNOWN
ubuntu16.04noarchlinux-aws-hwe<Β 4.15.0-1057.59~16.04.1UNKNOWN
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5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.004 Low

EPSS

Percentile

71.5%