What’s Vulnerable › Vulnerabilities

CVE-2017-18349

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 38.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-10-23 · updated 2026-06-17
• Weakness: CWE-20

Description

parseObject in Fastjson before 1.2.25, as used in FastjsonEngine in Pippo 1.11.0 and other products, allows remote attackers to execute arbitrary code via a crafted JSON request, as demonstrated by a crafted rmi:// URI in the dataSourceName field of HTTP POST data to the Pippo /json URI, which is mishandled in AjaxApplication.java.

Affected products

• Alibaba Fastjson: before 1.2.25 — fixed in 1.2.25
• Pippo: 1.11.0

How to fix

Upgrade to a fixed version: Alibaba Fastjson 1.2.25. Check the vendor advisory for mitigations.

References

• https://fortiguard.com/encyclopedia/ips/44059
• https://github.com/alibaba/fastjson/wiki/security_update_20170315
• https://github.com/pippo-java/pippo/issues/466
• https://fortiguard.com/encyclopedia/ips/44059
• https://github.com/alibaba/fastjson/wiki/security_update_20170315
• https://github.com/pippo-java/pippo/issues/466

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