Bug ID 949741: Enabling ssh-dss authentication fails for 'HostKeyAlgorithms=+alg' syntax

Last Modified: Apr 17, 2024

Affected Product(s):
BIG-IP TMOS(all modules)

Known Affected Versions:
12.1.5.2, 12.1.5.3, 12.1.6, 14.1.2.5, 14.1.2.6, 14.1.2.7, 14.1.2.8, 14.1.3, 14.1.3.1, 14.1.4, 14.1.4.1, 14.1.4.2, 14.1.4.3, 14.1.4.4, 14.1.4.5, 14.1.4.6, 14.1.5, 14.1.5.1, 14.1.5.2, 14.1.5.3, 14.1.5.4, 14.1.5.6, 15.0.1.4, 15.1.0.5, 15.1.1, 15.1.2, 15.1.2.1, 15.1.3, 15.1.3.1, 15.1.4, 15.1.4.1, 15.1.5, 15.1.5.1, 15.1.6, 15.1.6.1, 15.1.7, 15.1.8, 15.1.8.1, 15.1.8.2, 15.1.9, 15.1.9.1, 15.1.10, 15.1.10.2, 15.1.10.3, 15.1.10.4, 16.1.0, 16.1.1, 16.1.2, 16.1.2.1, 16.1.2.2, 16.1.3, 16.1.3.1, 16.1.3.2, 16.1.3.3, 16.1.3.4, 16.1.3.5, 16.1.4, 16.1.4.1, 16.1.4.2

Opened: Sep 29, 2020

Severity: 3-Major

Symptoms

'ssh -o HostKeyAlgorithms=+ssh-dss' fails, and does not enable ssh-dss.

Impact

ssh-dss can't be enabled with the '+alg' syntax.

Conditions

-- ssh-dss is disabled -- attempt to enable ssh-dss in an ssh command using the '+alg' syntax

Workaround

Use the syntax '-o HostKeyAlgorithms=ssh-dss' instead.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips