UBUNTU-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. 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.
02 / AFFECTED SOFTWARE
Affected packages
79 explicit affected versions
38 explicit affected versions
6 explicit affected versions
20 explicit affected versions
57 explicit affected versions
191 explicit affected versions
43 explicit affected versions
24 explicit affected versions
1 explicit affected versions
49 explicit affected versions
23 explicit affected versions
1 explicit affected versions
1 explicit affected versions
7 explicit affected versions
1 explicit affected versions
47 explicit affected versions
16 explicit affected versions
1 explicit affected versions
10 explicit affected versions
24 explicit affected versions
46 explicit affected versions
23 explicit affected versions
3 explicit affected versions
1 explicit affected versions
41 explicit affected versions
1 explicit affected versions
20 explicit affected versions
23 explicit affected versions
11 explicit affected versions
81 explicit affected versions
2 explicit affected versions
44 explicit affected versions
48 explicit affected versions
110 explicit affected versions
51 explicit affected versions
2 explicit affected versions
57 explicit affected versions
1 explicit affected versions
2 explicit affected versions
1 explicit affected versions
68 explicit affected versions
26 explicit affected versions
44 explicit affected versions
5 explicit affected versions
26 explicit affected versions
1 explicit affected versions
38 explicit affected versions
88 explicit affected versions
70 explicit affected versions
23 explicit affected versions
34 explicit affected versions
22 explicit affected versions
12 explicit affected versions
4 explicit affected versions
1 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://access.redhat.com/security/cve/CVE-2020-1749
- https://bugzilla.redhat.com/show_bug.cgi?id=1809833
- https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=6c8991f41546
- https://ubuntu.com/security/CVE-2020-1749
- https://ubuntu.com/security/notices/USN-4388-1
- https://ubuntu.com/security/notices/USN-4390-1
- https://ubuntu.com/security/notices/USN-4391-1
- https://www.cve.org/CVERecord?id=CVE-2020-1749