CVE-2020-1749

kernel: some ipv6 protocols not encrypted over ipsec tunnel

Published Sep 9, 2020 CVSS 3.1 · 7.5 High EPSS 1.1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-2241-1 linux security update
Debian DLA Debian DLA DLA-2241-2 linux security update
EUVD EUVD EUVD-2020-12580 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.
Ubuntu USN Ubuntu USN USN-4388-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-4390-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-4391-1 Linux kernel vulnerabilities
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Aug 4, 2024, 6:46 AM
Reserved
Nov 27, 2019, 12:00 AM
Status
Modified
Published
Sep 9, 2020, 3:15 PM
Modified
Jun 17, 2026, 3:02 AM
Severity
Moderate
Public date
Mar 4, 2020, 1:29 AM