CVE-2011-4953: Input Validation
First published: Mon Oct 27 2014(Updated: )
The `set_mgmt_parameters` function in item.py in cobbler before 2.2.2 allows context-dependent attackers to execute arbitrary code via vectors related to the use of the `yaml.load` function instead of the `yaml.safe_load function`, as demonstrated using Puppet.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| pip/cobbler | <2.6.0 | 2.6.0 |
| Michael Dehaan Cobbler | <=2.2.1 |
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Reference Links
- https://nvd.nist.gov/vuln/detail/CVE-2011-4953
- https://bugs.launchpad.net/ubuntu/oneiric/+source/cobbler/+bug/858883
- https://bugzilla.novell.com/show_bug.cgi?id=757062
- http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00019.html
- https://github.com/cobbler/cobbler/commit/1b4f9ecf051422eb8512794701900f6199651442
- https://github.com/advisories/GHSA-hpj3-5p46-g87w (Advisory)
Frequently Asked Questions
What is the severity of CVE-2011-4953?
CVE-2011-4953 is a critical vulnerability that allows context-dependent attackers to execute arbitrary code.
How do I fix CVE-2011-4953?
To fix CVE-2011-4953, upgrade Cobber to version 2.6.0 or later, or ensure that version 2.2.2 or newer is in use.
Which versions of Cobbler are affected by CVE-2011-4953?
CVE-2011-4953 affects Cobbler versions prior to 2.2.2, including 2.2.1 and below.
What function is the root cause of CVE-2011-4953?
The vulnerability in CVE-2011-4953 is caused by the use of the `yaml.load` function instead of `yaml.safe_load` in the `set_mgmt_parameters` function.
Is CVE-2011-4953 related to any specific attack vectors?
CVE-2011-4953 can be exploited through context-dependent vectors, as demonstrated in attacks using Puppet.
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