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S5700 Firmware CVE-2019-5256

MEDIUM
NULL Pointer Dereference (CWE-476)
2019-12-13 psirt@huawei.com
Denial Of Service Null Pointer Dereference Huawei S5700 Firmware Nip6300 Firmware Secospace Usg6500 Firmware Secospace Antiddos8000 Firmware Secospace Usg6300 Firmware Secospace Usg6600 Firmware Nip6600 Firmware Espace U1981 Firmware Nip6800 Firmware Svn5600 Firmware Svn5800 Firmware Svn5800 C Firmware Semg9811 Firmware Usg6000V Firmware Ap2000 Firmware Ips Firmware Ngfw Firmware
5.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
5.5 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

1
CVE Published
Dec 13, 2019 - 23:15 nvd
MEDIUM 5.5

DescriptionNVD

Certain Huawei products (AP2000;IPS Module;NGFW Module;NIP6300;NIP6600;NIP6800;S5700;SVN5600;SVN5800;SVN5800-C;SeMG9811;Secospace AntiDDoS8000;Secospace USG6300;Secospace USG6500;Secospace USG6600;USG6000V;eSpace U1981) have a null pointer dereference vulnerability. The system dereferences a pointer that it expects to be valid, but is NULL. A local attacker could exploit this vulnerability by sending crafted parameters. A successful exploit could cause a denial of service and the process reboot.

AnalysisAI

Certain Huawei products (AP2000;IPS Module;NGFW Module;NIP6300;NIP6600;NIP6800;S5700;SVN5600;SVN5800;SVN5800-C;SeMG9811;Secospace AntiDDoS8000;Secospace USG6300;Secospace USG6500;Secospace. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as NULL Pointer Dereference (CWE-476), which allows attackers to crash the application by dereferencing a null pointer. Certain Huawei products (AP2000;IPS Module;NGFW Module;NIP6300;NIP6600;NIP6800;S5700;SVN5600;SVN5800;SVN5800-C;SeMG9811;Secospace AntiDDoS8000;Secospace USG6300;Secospace USG6500;Secospace USG6600;USG6000V;eSpace U1981) have a null pointer dereference vulnerability. The system dereferences a pointer that it expects to be valid, but is NULL. A local attacker could exploit this vulnerability by sending crafted parameters. A successful exploit could cause a denial of service and the process reboot. Affected products include: Huawei Ap2000 Firmware, Huawei Ips Firmware, Huawei Ngfw Firmware, Huawei Nip6300 Firmware, Huawei Nip6600 Firmware.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Check pointers before dereferencing. Use static analysis tools to detect null pointer paths.

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CVE-2019-5256 vulnerability details – vuln.today
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