GHSA-4x6v-rwh4-55jw

Pomelo allows external control of critical state data

Source: GitHub Advisory Database (reviewed) Moderate CVE-2019-18954

Packages

Ecosystem	Package	Affected	Fixed in
npm	pomelo	< 2.2.7	2.2.7

Details

As written in the advisory (Markdown source, shown as plain text).

Pomelo v2.2.5 allows external control of critical state data. A malicious user input can corrupt arbitrary methods and attributes in `template/game-server/app/servers/connector/handler/entryHandler.js` because certain internal attributes can be overwritten via a conflicting name. Hence, a malicious attacker can manipulate internal attributes by adding additional attributes to user input.

References

External links from the advisory. They lead to third-party sites.

https://nvd.nist.gov/vuln/detail/CVE-2019-18954 advisory
https://github.com/NetEase/pomelo/issues/1149 web
https://github.com/cl0udz/vulnerabilities/tree/master/pomelo-critical-state-manipulation web