Input validation error in Fastjson - #VU23397

Vulnerability identifier: #VU23397

CSH Severity: High

CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: N/A

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send a specially crafted JSON data packets and execute arbitrary code on the target Fastjson server.

Fastjson
FusionCompute
eSpace ECS
iManager NetEco 6000
iManager NetEco
RSE6500

Install update from vendor's website.

FusionCompute - update to 8.0
RSE6500 - update to V500R002C00SPCh00
eSpace ECS - update to V300R001C00SPC221
iManager NetEco 6000 - update to V600R008C10SPC540
iManager NetEco - update to V600R008C30CP2402

• https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20191204-01-fastjson-en

• Remote code execution in Fastjson
• Remote code execution in several Huawei products