GitHub Advisory DatabaseGHSA-7JMW-8259-Q9JXTraefik has unexpected behavior with IPv4-mapped IPv6 addresses
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.6 Medium
AI Score
Confidence
Low
0.001 Low
EPSS
Percentile
27.0%
Impact
There is a vulnerability in Go managing various Is methods (IsPrivate, IsLoopback, etc) for IPv4-mapped IPv6 addresses.
They didn’t work as expected returning false for addresses which would return true in their traditional IPv4 forms.
References
Patches
- https://github.com/traefik/traefik/releases/tag/v2.11.4
- https://github.com/traefik/traefik/releases/tag/v3.0.2
Workarounds
No workaround.
For more information
If you have any questions or comments about this advisory, please open an issue.
Affected configurations
| CPE | Name | Operator | Version |
|---|---|---|---|
| github.com/traefik/traefik | lt | 2.11.4 | |
| github.com/traefik/traefik/v2 | lt | 2.11.4 | |
| github.com/traefik/traefik/v3 | lt | 3.0.2 |
Related
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
6.6 Medium
AI Score
Confidence
Low
0.001 Low
EPSS
Percentile
27.0%