CVE-2020-1749

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.

CVSS Metrics

• v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
• v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 0.15%• Percentile: 36%

Techniques & Countermeasures

• CWE-319•Cleartext Transmission of Sensitive Information

  The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.

Affected Systems

• linux kernel•kernel

  5.5

• linux•linux_kernel

  na

• redhat•enterprise_linux

  7.0

• redhat•enterprise_mrg

  2.0

References (2)

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1749
• https://security.netapp.com/advisory/ntap-20201222-0001/