4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
0.003 Low
EPSS
Percentile
71.3%
In the Linux kernel before 5.1.7, a device can be tracked by an attacker
using the IP ID values the kernel produces for connection-less protocols
(e.g., UDP and ICMP). When such traffic is sent to multiple destination IP
addresses, it is possible to obtain hash collisions (of indices to the
counter array) and thereby obtain the hashing key (via enumeration). An
attack may be conducted by hosting a crafted web page that uses WebRTC or
gQUIC to force UDP traffic to attacker-controlled IP addresses.
Author | Note |
---|---|
tyhicks | Kernels prior to 4.1 also need the following commit https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-3.16.y&id=8b197d3ce585d6777197e0633d71e5af7d98cb35 |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | linux | <Β 4.15.0-60.67 | UNKNOWN |
ubuntu | 19.04 | noarch | linux | <Β 5.0.0-27.28 | UNKNOWN |
ubuntu | 16.04 | noarch | linux | <Β 4.4.0-161.189 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws | <Β 4.15.0-1047.49 | UNKNOWN |
ubuntu | 19.04 | noarch | linux-aws | <Β 5.0.0-1014.16 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws | <Β 4.4.0-1092.103 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-aws-hwe | <Β 4.15.0-1047.49~16.04.1 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-azure | <Β 5.0.0-1018.19~18.04.1 | UNKNOWN |
ubuntu | 19.04 | noarch | linux-azure | <Β 5.0.0-1018.19 | UNKNOWN |
ubuntu | 16.04 | noarch | linux-azure | <Β 4.15.0-1056.61 | UNKNOWN |
arxiv.org/pdf/1906.10478.pdf
launchpad.net/bugs/cve/CVE-2019-10638
nvd.nist.gov/vuln/detail/CVE-2019-10638
security-tracker.debian.org/tracker/CVE-2019-10638
ubuntu.com/security/notices/USN-4114-1
ubuntu.com/security/notices/USN-4115-1
ubuntu.com/security/notices/USN-4116-1
ubuntu.com/security/notices/USN-4117-1
ubuntu.com/security/notices/USN-4118-1
www.cve.org/CVERecord?id=CVE-2019-10638
4.3 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:N/A:N
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
0.003 Low
EPSS
Percentile
71.3%