Vulnerabilities > CVE-2010-2235 - Code Injection vulnerability in Michael Dehaan Cobbler
Attack vector
UNKNOWN Attack complexity
UNKNOWN Privileges required
UNKNOWN Confidentiality impact
UNKNOWN Integrity impact
UNKNOWN Availability impact
UNKNOWN Summary
template_api.py in Cobbler before 2.0.7, as used in Red Hat Network Satellite Server and other products, does not disable the ability of the Cheetah template engine to execute Python statements contained in templates, which allows remote authenticated administrators to execute arbitrary code via a crafted kickstart template file, a different vulnerability than CVE-2008-6954.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Leverage Executable Code in Non-Executable Files An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
- Manipulating User-Controlled Variables This attack targets user controlled variables (DEBUG=1, PHP Globals, and So Forth). An attacker can override environment variables leveraging user-supplied, untrusted query variables directly used on the application server without any data sanitization. In extreme cases, the attacker can change variables controlling the business logic of the application. For instance, in languages like PHP, a number of poorly set default configurations may allow the user to override variables.
Nessus
| NASL family | Red Hat Local Security Checks |
| NASL id | REDHAT-RHSA-2010-0775.NASL |
| description | An updated cobbler package that fixes one security issue is now available for Red Hat Network Satellite Server 5.3. The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. Cobbler is a network install server. Cobbler supports PXE, virtualized installs, and re-installing existing Linux machines. Cheetah is a template engine used by Cobbler to process kickstart files. A code injection flaw was found in the way Cobbler processed templates for kickstart files. A remote, authenticated user, that has the Configuration Administrator role privilege, could use this flaw to create a specially crafted kickstart template file containing embedded Python code that could, when processed by Cheetah, execute arbitrary code with root privileges on the Red Hat Network Satellite Server. (CVE-2010-2235) Red Hat would like to thank Doug Knight of the University of Alaska for reporting this issue. Users of Red Hat Network Satellite Server 5.3 are advised to upgrade to this updated cobbler package, which contains backported patches to correct this issue. Red Hat Network Satellite Server must be restarted ( |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 50009 |
| published | 2010-10-18 |
| reporter | This script is Copyright (C) 2010-2019 and is owned by Tenable, Inc. or an Affiliate thereof. |
| source | https://www.tenable.com/plugins/nessus/50009 |
| title | RHEL 4 / 5 : cobbler (RHSA-2010:0775) |
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