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[email protected]CVE-2020-1749

HistorySep 09, 2020 - 3:15 p.m.

CVE-2020-1749

2020-09-0915:15:10

CWE-319

[email protected]

web.nvd.nist.gov

302

cve-2020-1749

linux kernel

ipsec

networking protocols

vxlan

geneve

tunnels

encrypted data transmission

data confidentiality

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:N/C:P/I:N/A:N

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

7 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

55.2%

JSON

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.

Affected configurations

Vulners

NVD

Node

linuxlinux_kernelRange≤5.5

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::

CNA Affected

[
  {
    "product": "kernel",
    "vendor": "Linux Kernel",
    "versions": [
      {
        "status": "affected",
        "version": "5.5"
      }
    ]
  }
]