CVE-2011-1075: Race Condition
First published: Tue Oct 19 2021(Updated: )
FreeBSD's crontab calculates the MD5 sum of the previous and new cronjob to determine if any changes have been made before copying the new version in. In particular, it uses the MD5File() function, which takes a pathname as an argument, and is called with euid 0. A race condition in this process may lead to an arbitrary MD5 comparison regardless of the read permissions.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| FreeBSD FreeBSD |
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Reference Links
Frequently Asked Questions
What is CVE-2011-1075?
CVE-2011-1075 is a vulnerability in FreeBSD's crontab which allows for a race condition during cronjob changes.
What is the severity of CVE-2011-1075?
CVE-2011-1075 has a severity rating of low.
How does FreeBSD's crontab handle cronjob changes?
FreeBSD's crontab uses the MD5 sum of the previous and new cronjob to determine if any changes have been made.
What function in FreeBSD's crontab is vulnerable in CVE-2011-1075?
The vulnerable function in FreeBSD's crontab is the MD5File() function.
Are there any references available for CVE-2011-1075?
Yes, you can find references for CVE-2011-1075 at the following links: [link1](https://marc.info/?l=full-disclosure&m=129891323028897&w=2), [link2](https://www.openwall.com/lists/oss-security/2011/02/28/14), [link3](https://security.netapp.com/advisory/ntap-20211125-0004/).
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