CVE-2019-18954 Pomelo allows external control of critical state data
Attackers can corrupt internal state and execute arbitrary code by overwriting critical attributes via malicious user input in Pomelo game servers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-18954?
CVE-2019-18954 is a medium-severity vulnerability in n/a, published on 13 Nov 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-668
Which versions are affected by CVE-2019-18954?
2 open source packages ship an affected version, including pomelo. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
pomelo npm | All versions | 2.2.7 |
pomelo npm | All versions | 2.2.7 |
Products include Netease Pomelo.
How do I fix CVE-2019-18954?
Upgrade pomelo to 2.2.7 or later.
Is CVE-2019-18954 being exploited?
There is no known exploitation of CVE-2019-18954 in the wild and no public exploit code.
Sources
Also known as GHSA-4x6v-rwh4-55jw.