In OpenStack Octavia before 18.0.1, the Amphora provider driver did not validate the listener and pool tls_ciphers field for control characters. The value is written verbatim into the HAProxy configuration generated on the amphora, and thus an authenticated project member who owns a TLS-enabled load balancer can embed a newline and inject arbitrary HAProxy configuration directives. Only deployments using the Amphora provider are affected.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 3
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Openstack Octavia
cpe:2.3:a:openstack:octavia:*:*:*:*:*:*:*:*
|
6.0.0
|
16.1.0
|
|
Openstack Octavia
cpe:2.3:a:openstack:octavia:*:*:*:*:*:*:*:*
|
17.0.0
|
17.0.1
|
|
Openstack Octavia
cpe:2.3:a:openstack:octavia:*:*:*:*:*:*:*:*
|
18.0.0
|
18.0.1
|
References 6
https://bugs.launchpad.net/octavia/+bug/2162101
NVD
https://bugs.launchpad.net/octavia/+bug/2167565
NVD
https://bugs.debian.org/1148175
NVD
https://opendev.org/openstack/octavia/commit/cad62902e4984a46ad80cbfa943e90006d…
NVD
https://security.openstack.org/ossa/OSSA-2026-039.html
NVD
https://openwall.com/lists/oss-security/2026/09/21/6
NVD