CVE-2019-10638

Medium

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.

Package Linux Kernel
Published 2019-07-05
Last modified 2024-11-21
CVSS version 3.0
Patch available
Awaiting data

CVSS 3.0 score

6.5

out of 10
Medium
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Vector string
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Weakness type

CWE-326

CVE-2019-10638 is classified as CWE-326

See CWE-326 on MITRE CWE for full details on this weakness type.

References

28 total
Showing 5 of 28 references View all on NVD

Frequently asked questions

  • What is CVE-2019-10638?

    CVE-2019-10638 is a Medium severity Linux kernel vulnerability with a CVSS score of 6.5 out of 10 . CVE-2019-10638 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2019-10638?

    CVE-2019-10638 has a CVSS score of 6.5 out of 10, rated Medium severity (CVSS 3.0). The vector string is CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N .

  • Is there a patch available for CVE-2019-10638?

    Monitor the NIST NVD and your Linux distribution's security advisories for CVE-2019-10638 patch availability.

  • Is CVE-2019-10638 actively exploited?

    No. CVE-2019-10638 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

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