Canna subsystem 'uum' Buffer ...

- AV AC AU C I A
发布: 1999-11-02
修订: 2018-10-17

Canna is a Japanese input system available as free software. Canna provides a unified user interface for inputting Japanese. Canna supports Nemacs(Mule), kinput2 and canuum. All of these tools can be used by a single customization file, romanji-to-kana conversion rules and conversion dictionaries, and input Japanese in the same way. Canna converts kana to kanji based on a client-server model and supports automatic kana-to-kanji conversion. The Canna subsystem on certain UNIX versions contains a buffer overflow in the 'uum' program. Uum is a Japanese input tty frontend for Canna. Regrettably, certain versions are vulnerable to a buffer overflow attack via unchecked user supplied data with the '-D' option. Since 'uum' is installed as SUID root this may result in a root level compromise.

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