Full Disclosure mailing list archives
Re: Fwd: VSFTPD Remote Heap Overrun (low severity)
From: Valdis.Kletnieks () vt edu
Date: Mon, 12 Dec 2011 14:08:07 -0500
On Mon, 12 Dec 2011 13:31:21 EST, Ramon de C Valle said:
This is a good question. Actually, we shouldn't allow ftpd_t read the locale files from within user_home_t directories.
To fill in the SELinux details for the people following along at home: The problem is that at open() time, there's no good way to specify what the expected label is (now *that* might be an interesting extention to open() for some enterprisng grad student) - so as long as the file has *any* foo_t label that the program is allowed to access, the open() will succeed. There's no way for it to say "I'm opening what *should* be a locale_t file, so if I'm being coerced into opening a user_foo_t, please nuke the request".
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Current thread:
- Fwd: VSFTPD Remote Heap Overrun (low severity), (continued)
- Message not available
- Fwd: VSFTPD Remote Heap Overrun (low severity) HI-TECH . (Dec 09)
- Re: Fwd: VSFTPD Remote Heap Overrun (low severity) GloW - XD (Dec 09)
- Re: Fwd: VSFTPD Remote Heap Overrun (low severity) GloW - XD (Dec 09)
- Fwd: VSFTPD Remote Heap Overrun (low severity) HI-TECH . (Dec 12)
- Re: Fwd: VSFTPD Remote Heap Overrun (low severity) Ramon de C Valle (Dec 12)
- Re: Fwd: VSFTPD Remote Heap Overrun (low severity) Daniel J Walsh (Dec 13)
- Re: Fwd: VSFTPD Remote Heap Overrun (low severity) Ramon de C Valle (Dec 12)
- Re: Fwd: VSFTPD Remote Heap Overrun (low severity) Daniel J Walsh (Dec 13)
- Re: Fwd: VSFTPD Remote Heap Overrun (low severity) Ramon de C Valle (Dec 12)
- Re: Fwd: VSFTPD Remote Heap Overrun (low severity) Valdis . Kletnieks (Dec 12)
- Re: Fwd: VSFTPD Remote Heap Overrun (low severity) Ramon de C Valle (Dec 12)
- Re: Fwd: VSFTPD Remote Heap Overrun (low severity) lists (Dec 12)
- Re: Fwd: VSFTPD Remote Heap Overrun (low severity) Valdis . Kletnieks (Dec 12)
- Re: Fwd: VSFTPD Remote Heap Overrun (low severity) Ramon de C Valle (Dec 12)
- Re: Fwd: VSFTPD Remote Heap Overrun (low severity) Valdis . Kletnieks (Dec 12)