| パッケージ | 影響を受けるバージョン | 修正済みバージョン |
|---|---|---|
| papercut mf | ≥ 25.0.2, < 25.0.10< 24.1.9 | 25.0.1024.1.9 |
| papercut ng | ≥ 25.0.2, < 25.0.10< 24.1.9 | 25.0.1024.1.9 |
A race condition exists in PaperCut MF when processing badge-swipe data from certain HP multifunction devices. Under specific network conditions involving dropped packets and out-of-order sequence counters, the server may incorrectly process fragmented data chunks. If a sequence reset notification fails to reach the server, the server may reject the initial data chunk while erroneously accepting subsequent chunks before a connection reset completes. This leads to the registration of a truncated badge ID string. While this typically results in an authentication failure, the vulnerability is compounded in environments utilizing custom badge-ID post-processing scripts. In such configurations, the truncated string may be transformed into a valid ID belonging to a different user, leading to unauthorized session establishment (Incorrect User Login) on the device.
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