Arbitrary Code Execution

2023-08-2202:36:08

Veracode Vulnerability Database

sca.analysiscenter.veracode.com

arbitrary code execution

com.alibaba.nacos

yaml

nacospropertysource

snakeyamls constructor

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.002

Percentile

53.5%

JSON

com.alibaba.nacos:nacos-spring-context is vulnerable to Arbitrary Code Execution. The vulnerability exists in the SnakeYamls Constructor(), which is used to parse YAML files. An attacker who is able to modify a yaml file thats defined in the NacosPropertySource is able to execute arbitrary code.