CVE-2011-1004: Race Condition
First published: Sun Feb 20 2011(Updated: )
A race condition was found in the way the secure implementation of Ruby fileutils' remove system entries method (remove_entry_secure()), removed directory trees. A local attacker could use this flaw to conduct symbolic link attacks, leading to removal of arbitrary files or directories on the system. References: [1] <a href="http://www.ruby-lang.org/en/news/2011/02/18/fileutils-is-vulnerable-to-symlink-race-attacks/">http://www.ruby-lang.org/en/news/2011/02/18/fileutils-is-vulnerable-to-symlink-race-attacks/</a> Upstream patch (against trunk): [2] <a href="http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=30896">http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=30896</a>
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Ruby | =1.8.6 | |
| Ruby | =1.8.7 | |
| Ruby | =1.8.8-dev | |
| Ruby | =1.9.1 | |
| Ruby | =1.9.2 | |
| Ruby | =1.9.3-dev |
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Reference Links
- http://www.ruby-lang.org/en/news/2011/02/18/fileutils-is-vulnerable-to-symlink-race-attacks/
- http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=30896
- http://www.openwall.com/lists/oss-security/2011/02/21/2
- https://access.redhat.com/security/cve/CVE-2011-1004
- http://www.openwall.com/lists/oss-security/2011/02/21/5
- https://rhn.redhat.com/errata/RHSA-2011-0910.html
- https://rhn.redhat.com/errata/RHSA-2011-0909.html
- https://bugzilla.redhat.com/show_bug.cgi?id=678913
- http://www.securityfocus.com/bid/46460
- http://secunia.com/advisories/43434
- http://osvdb.org/70958
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/054422.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/054436.html
- http://www.vupen.com/english/advisories/2011/0539
- http://secunia.com/advisories/43573
- http://www.redhat.com/support/errata/RHSA-2011-0910.html
- http://www.redhat.com/support/errata/RHSA-2011-0909.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:097
- http://support.apple.com/kb/HT5281
- http://lists.apple.com/archives/security-announce/2012/May/msg00001.html
Frequently Asked Questions
What is the severity of CVE-2011-1004?
CVE-2011-1004 is classified as a medium severity vulnerability due to its potential for local attackers to exploit it for symlink attacks.
How do I fix CVE-2011-1004?
To fix CVE-2011-1004, upgrade to a patched version of Ruby or apply the recommended security patches as outlined in the project updates.
What versions of Ruby are affected by CVE-2011-1004?
CVE-2011-1004 affects Ruby versions 1.8.6, 1.8.7, 1.8.8-dev, 1.9.1, 1.9.2, and 1.9.3-dev.
What type of attack can be performed using CVE-2011-1004?
CVE-2011-1004 can be exploited by local attackers to conduct symbolic link attacks, potentially resulting in the removal of arbitrary files or directories.
Is CVE-2011-1004 a local or remote vulnerability?
CVE-2011-1004 is a local vulnerability, meaning it requires local access to the system for exploitation.
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