Improper input validation in Alibaba Fastjson
CVE-2017-18349
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.392 (98.6th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.390 · newest: 0.392 · change: +0.003
Affected products
- Alibaba Fastjson
- Pippo — versions 1.11.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- fortiguard.com/encyclopedia/ips/44059 (Third Party Advisory, Mitigation)
- github.com/alibaba/fastjson/wiki/security_update_20170315 (Third Party Advisory, Mitigation)
- github.com/pippo-java/pippo/issues/466 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-18349?
- CVE-2017-18349 is a critical-severity vulnerability in Alibaba Fastjson, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2018-10-23.
- How severe is CVE-2017-18349?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2017-18349 known to be exploited?
- 29 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.