UE security capabilities mismatch

[grmono]

Issue Description

I am trying to connect a Samsung A130 to the 4G srsenb/srsepc setup but fail to complete the Security Command flow due to UE capabilities mismatch send from the UE side

Setup Details

Ettus B200 as SRSENB and samsung A130 as UE with valid USIM, i am using the latest version of srsRAN_4G , on both srsepc and srsenb i am uzing EIA =0 and EEA = 0.

Expected Behavior

Security capabilities should match the capabilities received by the UE and the UE should not send security command reject due to ue capabilties

Actual Behaviour

The UE replied with EMM cause Cause: UE security capabilities mismatch (23)

Their is an issue found on open5gs that might be related to this issue here https://github.com/open5gs/open5gs/issues/27

Security Capabilities send by UE on attach request

UE network capability Length: 7

1... .... = EEA0: Supported
.1.. .... = 128-EEA1: Supported
..1. .... = 128-EEA2: Supported
...1 .... = 128-EEA3: Supported
.... 0... = EEA4: Not supported
.... .0.. = EEA5: Not supported
.... ..0. = EEA6: Not supported
.... ...0 = EEA7: Not supported
1... .... = EIA0: Supported
.1.. .... = 128-EIA1: Supported
..1. .... = 128-EIA2: Supported
...1 .... = 128-EIA3: Supported
.... 0... = EIA4: Not supported
.... .0.. = EIA5: Not supported
.... ..0. = EIA6: Not supported
.... ...0 = EIA7: Not supported
1... .... = UEA0: Supported
.1.. .... = UEA1: Supported
..0. .... = UEA2: Not supported
...0 .... = UEA3: Not supported
.... 0... = UEA4: Not supported
.... .0.. = UEA5: Not supported
.... ..0. = UEA6: Not supported
.... ...0 = UEA7: Not supported
1... .... = UCS2 support (UCS2): The UE has no preference between the use of the default alphabet and the use of UCS2
.1.. .... = UMTS integrity algorithm UIA1: Supported
..0. .... = UMTS integrity algorithm UIA2: Not supported
...0 .... = UMTS integrity algorithm UIA3: Not supported
.... 0... = UMTS integrity algorithm UIA4: Not supported
.... .0.. = UMTS integrity algorithm UIA5: Not supported
.... ..0. = UMTS integrity algorithm UIA6: Not supported
.... ...0 = UMTS integrity algorithm UIA7: Not supported
0... .... = ProSe direct discovery: Not supported
.0.. .... = ProSe: Not supported
..0. .... = H.245 After SRVCC Handover: Not supported
...1 .... = Access class control for CSFB: Supported
.... 0... = LTE Positioning Protocol: Not supported
.... .0.. = Location services (LCS) notification mechanisms: Not supported
.... ..0. = SRVCC from E-UTRAN to cdma2000 1xCS: Not supported
.... ...1 = Notification procedure: Supported
0... .... = Extended protocol configuration options: Not supported
.0.. .... = Header compression for control plane CIoT EPS optimization: Not supported
..0. .... = EMM-REGISTERED w/o PDN connectivity: Not supported
...0 .... = S1-U data transfer: Not supported
.... 0... = User plane CIoT EPS optimization: Not supported
.... .0.. = Control plane CIoT EPS optimization: Not supported
.... ..0. = ProSe UE-to-network relay: Not supported
.... ...0 = ProSe direct communication: Not supported
0... .... = Signalling for a maximum number of 15 EPS bearer contexts: Not supported
.0.. .... = Service gap control: Not supported
..0. .... = N1 mode: Not supported
...0 .... = Dual connectivity with NR: Not supported
.... 0... = Control plane data backoff: Not supported
.... .0.. = Restriction on use of enhanced coverage: Not supported
.... ..0. = V2X communication over PC5: Not supported
.... ...0 = Multiple DRB: Not supported

Capabilities Replayed in security command

UE security capability - Replayed UE security capabilities Length: 5

1... .... = EEA0: Supported
.1.. .... = 128-EEA1: Supported
..1. .... = 128-EEA2: Supported
...1 .... = 128-EEA3: Supported
.... 0... = EEA4: Not supported
.... .0.. = EEA5: Not supported
.... ..0. = EEA6: Not supported
.... ...0 = EEA7: Not supported
1... .... = EIA0: Supported
.1.. .... = 128-EIA1: Supported
..1. .... = 128-EIA2: Supported
...1 .... = 128-EIA3: Supported
.... 0... = EIA4: Not supported
.... .0.. = EIA5: Not supported
.... ..0. = EIA6: Not supported
.... ...0 = EIA7: Not supported
1... .... = UEA0: Supported
.1.. .... = UEA1: Supported
..0. .... = UEA2: Not supported
...0 .... = UEA3: Not supported
.... 0... = UEA4: Not supported
.... .0.. = UEA5: Not supported
.... ..0. = UEA6: Not supported
.... ...0 = UEA7: Not supported
0... .... = Spare bit(s): 0x0
.1.. .... = UMTS integrity algorithm UIA1: Supported
..0. .... = UMTS integrity algorithm UIA2: Not supported
...0 .... = UMTS integrity algorithm UIA3: Not supported
.... 0... = UMTS integrity algorithm UIA4: Not supported
.... .0.. = UMTS integrity algorithm UIA5: Not supported
.... ..0. = UMTS integrity algorithm UIA6: Not supported
.... ...0 = UMTS integrity algorithm UIA7: Not supported
0... .... = Spare bit(s): 0x0
.0.. .... = GPRS encryption algorithm GEA1: Not supported
..1. .... = GPRS encryption algorithm GEA2: Supported
...1 .... = GPRS encryption algorithm GEA3: Supported
.... 1... = GPRS encryption algorithm GEA4: Supported
.... .0.. = GPRS encryption algorithm GEA5: Not supported
.... ..0. = GPRS encryption algorithm GEA6: Not supported
.... ...0 = GPRS encryption algorithm GEA7: Not supported

[Tonyhauatust]

same issue encountered by me, any updates?

[Tonyhauatust]

Updates: After disabling videotelephony functionality on my android phone the security command mode is successful.