CVE-2019-5307 Information

Description

Some Huawei 4G LTE devices P30 versions before ELE-AL00 9.1.0.162(C01E160R1P12/C01E160R2P1) and P30 Pro versions before VOG-AL00 9.1.0.162(C01E160R1P12/C01E160R2P1) are exposed to a message replay vulnerability. For the sake of better compatibility these devices implement a less strict check on the NAS message sequence number (SN) specifically NAS COUNT. As a result an attacker can construct a rogue base station and replay the GUTI reallocation command message in certain conditions to tamper with GUTIs or replay the Identity request message to obtain IMSIs. (Vulnerability ID: HWPSIRT-2019-04107)

CVSS Vector

CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Reference

https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20190529-01-replay-en

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

4.2