Home/CVE/A flaw was found in the Linux kernel in versions before 5.9-rc7. Traffic between two Geneve endpoints may be unencrypted
CVE

CVE-2020-25645

A flaw was found in the Linux kernel in versions before 5.9-rc7. Traffic between two Geneve endpoints may be unencrypted

A flaw was found in the Linux kernel in versions before 5.9-rc7. Traffic between two Geneve endpoints may be unencrypted when IPsec is configured to encrypt traffic for the specific UDP port used by the GENEVE tunnel allowing anyone between the two endpoints to read the traffic unencrypted. The main threat from this vulnerability is to data confidentiality.

HIGH · CVSS 7.5 EPSS 0.00393
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-319Cleartext Transmission of Sensitive Information
CWE-319Cleartext Transmission of Sensitive Information
▤

Affected Products & Versions

8
linux kernel< 5.9.0
linux kernelall versions
debian linuxall versions
netapp solidfire \& hci management nodeall versions
netapp solidfire \& hci storage nodeall versions
opensuse leapall versions
netapp hci compute node biosall versions
canonical ubuntu linuxall versions
⚠

Public Exploits & PoCs

2
pocpacketstormsecurity.com · Kernel-Live-Patch-Security-Notice-LSN-0074-1.htmlpacketstormsecurity.com
pocbugzilla.redhat.com · show_bug.cgi?id=1883988bugzilla.redhat.com
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD13 Oct 2020 · 08:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
⚑

Vendor Advisories

30
rhsaRHSA-2021:1578Moderate
usnUSN-4912-1
suse-csafSUSE-SU-2021:1074-1
suse-csafSUSE-SU-2021:0835-1
suse-csafopenSUSE-SU-2021:0242-1
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00035.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00028.htmlMailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.htmlMailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20201103-0004/Third Party Advisory
https://www.debian.org/security/2020/dsa-4774Third Party Advisory
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