Bug 15626 - /bin/mail + suidperl = rootshell
/bin/mail + suidperl = rootshell
Status: CLOSED DUPLICATE of bug 15625
Product: Red Hat Linux
Classification: Retired
Component: mailx (Show other bugs)
i386 Linux
high Severity medium
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Assigned To: Florian La Roche
: Security
Depends On:
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Reported: 2000-08-07 06:26 EDT by Philip Rowlands
Modified: 2008-05-01 11:37 EDT (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2000-08-07 13:29:39 EDT
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Description Philip Rowlands 2000-08-07 06:26:23 EDT
Seems no-one else has posted this yet, so here goes:

A Bugtraq posting explains how local users can gain root access on any
RH6.x system by exploiting a bad interaction between /bin/mail's
undocumented "interactive" feature, and suidperl's tendency to mail root
when it detects a changed script.

The URL is posted into the bugzilla URL field above.

Mail should not allow shell escapes in a SUID context. (It should probably
document the "interactive" feature as well)
Comment 1 Philip Rowlands 2000-08-07 13:29:37 EDT
This duplicates bug ids 15630 and 15641
Comment 2 Pekka Savola 2000-08-08 04:47:32 EDT

*** This bug has been marked as a duplicate of 15625 ***

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