Bug ID 629033: BIG-IP should send SHA1 in supported signature hash algorithm last (clientside / Server Hello).

Last Modified: Apr 10, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP LTM(all modules)

Known Affected Versions:
11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.2, 11.5.2 HF1, 11.5.3, 11.5.3 HF1, 11.5.3 HF2, 11.5.4, 11.5.4 HF1, 11.5.4 HF2, 11.5.4 HF3, 11.5.4 HF4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4

Fixed In:
12.0.0, 11.6.1 HF2, 11.6.0 HF5

Opened: Nov 16, 2016
Severity: 4-Minor

Symptoms

BIG-IP should send SHA1 in supported signature hash algorithm last (clientside / Server Hello). Instead, the BIG-IP system is sending SHA1 signature algorithms in the Server Hello first.

Impact

Minimal. SHA1 algorithms are listed first and they should be last.

Conditions

clientside / Server Hello.

Workaround

None.

Fix Information

The system now reorders signature hash algorithms such that SHA1 is last.

Behavior Change