CVSS2
Attack Vector
NETWORK
Attack 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
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
EPSS
Percentile
64.8%
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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | < 4.15.0-74.84 | UNKNOWN |
ubuntu | 19.04 | noarch | linux | < 5.0.0-38.41 | UNKNOWN |
ubuntu | 19.10 | noarch | linux | < 5.3.0-24.26 | UNKNOWN |
ubuntu | 16.04 | noarch | linux | < 4.4.0-170.199 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | < 4.15.0-1057.59 | UNKNOWN |
ubuntu | 19.10 | noarch | linux-aws | < 5.3.0-1008.9 | UNKNOWN |
ubuntu | 14.04 | noarch | linux-aws | < 4.4.0-1059.63 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws | < 4.4.0-1099.110 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws-5.0 | < 5.0.0-1023.26~18.04.1 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws-hwe | < 4.15.0-1057.59~16.04.1 | UNKNOWN |
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.10
git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=55667441c84fa5e0911a0aac44fb059c15ba6da2
launchpad.net/bugs/cve/CVE-2019-18282
nvd.nist.gov/vuln/detail/CVE-2019-18282
security-tracker.debian.org/tracker/CVE-2019-18282
www.cve.org/CVERecord?id=CVE-2019-18282
CVSS2
Attack Vector
NETWORK
Attack 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
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
EPSS
Percentile
64.8%