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Vixie Cron "do_command.c" setuid Security Issue

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Release Date:  2006-06-01    Views:  11,454

Secunia Advisory SA20380

Where:

Local system

Impact:

Privilege escalation

Solution Status:

Unpatched

Software:

CVE Reference(s):

Description


Roman Veretelnikov has reported a security issue in Vixie Cron, which potentially can be exploited by malicious, local users to perform certain actions with escalated privileges.

The security issue is caused due to missing checks for whether the "setuid()" call has succeeded before running a job submitted by a user. This may cause the user's job to run with root privileges if the "setuid()" fails due to e.g. PAM failures or resource limits.

The security issue has been reported in version 4.1. Other versions may also be affected.


Solution:
Restrict the use of cron to trusted users only.

Further details available to Secunia VIM customers

Provided and/or discovered by:
Roman Veretelnikov

Original Advisory:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=178431
http://bugs.gentoo.org/show_bug.cgi?id=134194

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Vixie Cron "do_command.c" setuid Security Issue

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