CVE-2019-18954 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Severity

53%

Complexity

39%

Confidentiality

23%

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.

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.

CVSS 3.1 Base Score 5.3. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).

CVSS 2.0 Base Score 5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P).

Overview

First reported 5 years ago

2019-11-14 00:15:00

Last updated 5 years ago

2019-11-18 16:24:00

Affected Software

Netease Pomelo 2.2.5

2.2.5

References

https://github.com/cl0udz/vulnerabilities/tree/master/pomelo-critical-state-manipulation

Exploit, Third Party Advisory

https://github.com/NetEase/pomelo/issues/1149

Issue Tracking, Third Party Advisory

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