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Red Hat: CVE-2020-1749: CVE-2020-1749 kernel: some ipv6 protocols not encrypted over ipsec tunnel (Multiple Advisories)

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Red Hat: CVE-2020-1749: CVE-2020-1749 kernel: some ipv6 protocols not encrypted over ipsec tunnel (Multiple Advisories)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
04/28/2020
Created
05/01/2020
Added
04/29/2020
Modified
03/13/2024

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.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

References

  • CVE-2020-1749
  • RHSA-2020:1567
  • RHSA-2020:1769
  • RHSA-2020:4060
  • RHSA-2020:4062

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