Out-of-bounds read in Huawei products - CVE-2020-1866

Vulnerability identifier: #VU49225

CSH Severity: Low

CVSS v4: 7.1 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-1866

CWE-ID: CWE-125

Exploitation vector: Adjecent network

Exploit availability: No public exploit available

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

The vulnerability exists due to a boundary condition when parsing certain crafted DHCP messages. A remote attacker on the local network can trigger out-of-bounds read error and cause a denial of service condition on the target system.

Huawei S12700
Huawei S5700
Huawei S2700
Huawei S6700
Huawei S7700
Huawei S9700
USG9500
Huawei Secospace USG6600
Huawei NIP6800

Install updates from vendor's website.

Huawei S12700 - update to V200R013C00SPC500
Huawei S2700 - update to V200R013C00SPC500
Huawei S5700 - update to V200R013C00SPC500
Huawei S6700 - update to V200R013C00SPC500
Huawei S7700 - update to V200R013C00SPC500
Huawei S9700 - update to V200R013C00SPC500
Huawei Secospace USG6600 - update to V500R005C20SPC300
USG9500 - update to V500R005C20SPC300
Huawei NIP6800 - update to V500R005C20SPC300

• https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20200122-09-eudemon-en

• Denial of service in several Huawei Products