Vulnerabilities > CVE-2008-5516 - Permissions, Privileges, and Access Controls vulnerability in multiple products
The web interface in git (gitweb) 1.5.x before 1.5.5 allows remote attackers to execute arbitrary commands via shell metacharacters related to git_search.
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Accessing, Modifying or Executing Executable Files An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
- Blue Boxing This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
- Restful Privilege Elevation Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
- Target Programs with Elevated Privileges This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.
NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-723-1.NASL description It was discovered that Git did not properly handle long file paths. If a user were tricked into performing commands on a specially crafted Git repository, an attacker could possibly execute arbitrary code with the privileges of the user invoking the program. (CVE-2008-3546) It was discovered that the Git web interface (gitweb) did not correctly handle shell metacharacters when processing certain commands. A remote attacker could send specially crafted commands to the Git server and execute arbitrary code with the privileges of the Git web server. This issue only applied to Ubuntu 7.10 and 8.04 LTS. (CVE-2008-5516, CVE-2008-5517) It was discovered that the Git web interface (gitweb) did not properly restrict the diff.external configuration parameter. A local attacker could exploit this issue and execute arbitrary code with the privileges of the Git web server. This issue only applied to Ubuntu 8.04 LTS and 8.10. (CVE-2008-5916). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 36720 published 2009-04-23 reporter Ubuntu Security Notice (C) 2009-2019 Canonical, Inc. / NASL script (C) 2009-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/36720 title Ubuntu 6.06 LTS / 7.10 / 8.04 LTS / 8.10 : git-core vulnerabilities (USN-723-1) NASL family CGI abuses NASL id GITWEB_GIT_SEARCH_CMD_EXEC.NASL description The version of gitweb, a web-enabled interface to the open source distributed version control system Git, hosted on the remote web server fails to sanitize user-supplied input to the last seen 2020-06-01 modified 2020-06-02 plugin id 53336 published 2011-04-08 reporter This script is Copyright (C) 2011-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/53336 title GIT gitweb git_search Shell Metacharacter Arbitrary Command Execution NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-200903-15.NASL description The remote host is affected by the vulnerability described in GLSA-200903-15 (git: Multiple vulnerabilties) Multiple vulnerabilities have been reported in gitweb that is part of the git package: Shell metacharacters related to git_search are not properly sanitized (CVE-2008-5516). Shell metacharacters related to git_snapshot and git_object are not properly sanitized (CVE-2008-5517). The diff.external configuration variable as set in a repository can be executed by gitweb (CVE-2008-5916). Impact : A remote unauthenticated attacker can execute arbitrary commands via shell metacharacters in a query, remote attackers with write access to a git repository configuration can execute arbitrary commands with the privileges of the user running gitweb by modifying the diff.external configuration variable in the repository and sending a crafted query to gitweb. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 35813 published 2009-03-10 reporter This script is Copyright (C) 2009-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/35813 title GLSA-200903-15 : git: Multiple vulnerabilties NASL family Slackware Local Security Checks NASL id SLACKWARE_SSA_2009-051-02.NASL description New git packages are available for Slackware 12.0, 12.1, 12.2, and -current to fix security issues. last seen 2020-06-01 modified 2020-06-02 plugin id 35728 published 2009-02-23 reporter This script is Copyright (C) 2009-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/35728 title Slackware 12.0 / 12.1 / 12.2 / current : git (SSA:2009-051-02) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-1708.NASL description It was discovered that gitweb, the web interface for the Git version control system, contained several vulnerabilities : Remote attackers could use crafted requests to execute shell commands on the web server, using the snapshot generation and pickaxe search functionality (CVE-2008-5916 ). Local users with write access to the configuration of a Git repository served by gitweb could cause gitweb to execute arbitrary shell commands with the permission of the web server (CVE-2008-5516, CVE-2008-5517 ). last seen 2020-06-01 modified 2020-06-02 plugin id 35425 published 2009-01-20 reporter This script is Copyright (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/35425 title Debian DSA-1708-1 : git-core - shell command injection
|title||gitWeb 1.x Remote Command Execution|
bulletinFamily exploit description No description provided by source. id SSV:67749 last seen 2017-11-19 modified 2014-07-01 published 2014-07-01 reporter Root source https://www.seebug.org/vuldb/ssvid-67749 title gitWeb 1.5.2 - Remote Command Execution bulletinFamily exploit description No description provided by source. id SSV:19134 last seen 2017-11-19 modified 2010-02-19 published 2010-02-19 reporter Root source https://www.seebug.org/vuldb/ssvid-19134 title gitWeb v1.5.2 Remote Command Execution