High severity · published Sep 9, 2020
CVE-2020-1749
A flaw was found in the Linux kernel's implementation of some networking protocols in IPsec, such as VXLAN and GENEVE tunnels over IPv6
7.5
CVSS
1.2%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 69% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
All versions, or not specified · source: NVD
EL
Enterprise Linux · Redhat
7.0 · source: NVD
EM
Enterprise Mrg · Redhat
2.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-1749
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-1749
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1749
security.netapp.com
https://security.netapp.com/advisory/ntap-20201222-0001/
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