NULL pointer dereference in Huawei products - CVE-2019-5256

Vulnerability identifier: #VU23627

CSH Severity: Low

CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-5256

CWE-ID: CWE-476

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error. A local attacker can send specially crafted parameters, cause a denial of service condition and the process reboot.

Huawei Secospace USG6300
Huawei Secospace USG6500
Huawei Secospace USG6600
Huawei SVN5600
Huawei SVN5800
Huawei SVN5800-C
Huawei NGFW Module
Huawei eSpace U1981
Huawei USG6000V
Huawei S5700
Huawei AP2000
Huawei NIP6600
Huawei NIP6800
Huawei NIP6300
Huawei IPS Module
Huawei Secospace AntiDDoS8000
Huawei SeMG9811

Install updates from vendor's website.

Huawei Secospace USG6300 - update to V500R005C20
Huawei Secospace USG6500 - update to V500R005C20
Huawei Secospace USG6600 - update to V500R005C20
Huawei SVN5600 - update to V500R005C20
Huawei SVN5800 - update to V500R005C20
Huawei SVN5800-C - update to V500R005C20
Huawei eSpace U1981 - update to V200R003C50SPC900
Huawei S5700 - update to V200R005SPH026
Huawei AP2000 - update to V200R019C00
Huawei NIP6600 - update to V500R005C20
Huawei NIP6800 - update to V500R005C20
Huawei NIP6300 - update to V500R005C20
Huawei IPS Module - update to V500R005C20
Huawei NGFW Module - update to V500R005C20
Huawei USG6000V - update to V500R005C20
Huawei Secospace AntiDDoS8000 - update to V500R005C20
Huawei SeMG9811 - update to V500R005C20

• https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20191211-01-ssp-en

• Multiple vulnerabilities in some Huawei Products