CVE-2020-1749

High

A flaw was found in the Linux kernel's implementation of some networking protocols in IPsec, such as VXLAN and GENEVE tunnels over IPv6. When an encrypted tunnel is created between two hosts, the kernel isn't correctly routing tunneled data over the encrypted link; rather sending the data unencrypted. This would allow anyone in between the two endpoints to read the traffic unencrypted. The main threat from this vulnerability is to data confidentiality.

Package Linux Kernel
Published 2020-09-09
Last modified 2024-11-21
CVSS version 3.1
Patch available
Awaiting data

CVSS 3.1 score

7.5

out of 10
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness type

CWE-319

CVE-2020-1749 is classified as CWE-319

See CWE-319 on MITRE CWE for full details on this weakness type.

References

The following references provide additional information about CVE-2020-1749 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Frequently asked questions

  • What is CVE-2020-1749?

    CVE-2020-1749 is a High severity Linux kernel vulnerability with a CVSS score of 7.5 out of 10 . CVE-2020-1749 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

  • What is the CVSS score for CVE-2020-1749?

    CVE-2020-1749 has a CVSS score of 7.5 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N .

  • Is there a patch available for CVE-2020-1749?

    No patch is currently available for CVE-2020-1749. Monitor the NIST NVD and your Linux distribution's security advisories for updates.

  • Is CVE-2020-1749 actively exploited?

    No — CVE-2020-1749 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.