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GHSA-j5qg-w9jg-3wg3
pocketmine/pocketmine-mpImpact
Originally reported in iTXTech/Genisys#1188
PotterHarry98
potterharry98
deop PotterHarry98
will remove potterharry98 from the ops.txt but not PotterHarry98.
Operator permissions are checked using Config->exists() with lowercase=true, which will result in a match:
https://github.com/pmmp/PocketMine-MP/blob/22bb1ce8e03dba57173debf0415390511d68e045/src/utils/Config.php#L449
This means that it's possible to make yourself impossible to de-op (using commands) by adding your name to ops.txt with uppercase letters.
Patches
4d37b79ff7f9d9452e988387f97919a9a1c4954e
Workarounds
This can be easily addressed by removing the offending lines from ops.txt manually.
For more information
If you have any questions or comments about this advisory:
- Open an issue in pmmp/PocketMine-MP
- Email us at team@pmmp.io
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The vulnerability requires local access to the device to be exploited. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information.
Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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