Vulnerabilities > CVE-2012-2241 - Improper Input Validation vulnerability in Devscripts Devel Team Devscripts

047910
CVSS 0.0 - NONE
Attack vector
UNKNOWN
Attack complexity
UNKNOWN
Privileges required
UNKNOWN
Confidentiality impact
UNKNOWN
Integrity impact
UNKNOWN
Availability impact
UNKNOWN

Summary

scripts/dget.pl in devscripts before 2.12.3 allows remote attackers to delete arbitrary files via a crafted (1) .dsc or (2) .changes file, probably related to a NULL byte in a filename.

Vulnerable Configurations

Part Description Count
Application
Devscripts_Devel_Team
91

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Server Side Include (SSI) Injection
    An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
  • Cross Zone Scripting
    An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
  • Cross Site Scripting through Log Files
    An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.

Nessus

  • NASL familyUbuntu Local Security Checks
    NASL idUBUNTU_USN-1593-1.NASL
    descriptionRaphael Geissert discovered that the debdiff.pl tool incorrectly handled shell metacharacters. If a user or automated system were tricked into processing a specially crafted filename, a remote attacker could possibly execute arbitrary code. (CVE-2012-0212) Raphael Geissert discovered that the dscverify tool incorrectly escaped arguments to external commands. If a user or automated system were tricked into processing specially crafted files, a remote attacker could possibly execute arbitrary code. (CVE-2012-2240) Raphael Geissert discovered that the dget tool incorrectly performed input validation. If a user or automated system were tricked into processing specially crafted files, a remote attacker could delete arbitrary files. (CVE-2012-2241) Raphael Geissert discovered that the dget tool incorrectly escaped arguments to external commands. If a user or automated system were tricked into processing specially crafted files, a remote attacker could possibly execute arbitrary code. This issue only affected Ubuntu 10.04 LTS and Ubuntu 11.04. (CVE-2012-2242) Jim Meyering discovered that the annotate-output tool incorrectly handled temporary files. A local attacker could use this flaw to alter files being processed by the annotate-output tool. On Ubuntu 11.04 and later, this issue was mitigated by the Yama kernel symlink restrictions. (CVE-2012-3500). 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 seen2020-06-01
    modified2020-06-02
    plugin id62411
    published2012-10-03
    reporterUbuntu Security Notice (C) 2012-2019 Canonical, Inc. / NASL script (C) 2012-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/62411
    titleUbuntu 10.04 LTS / 11.04 / 11.10 / 12.04 LTS : devscripts vulnerabilities (USN-1593-1)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-2549.NASL
    descriptionMultiple vulnerabilities have been discovered in devscripts, a set of scripts to make the life of a Debian Package maintainer easier. The following Common Vulnerabilities and Exposures project ids have been assigned to identify them : - CVE-2012-2240 : Raphael Geissert discovered that dscverify does not perform sufficient validation and does not properly escape arguments to external commands, allowing a remote attacker (as when dscverify is used by dget) to execute arbitrary code. - CVE-2012-2241 : Raphael Geissert discovered that dget allows an attacker to delete arbitrary files when processing a specially crafted .dsc or .changes file, due to insuficient input validation. - CVE-2012-2242 : Raphael Geissert discovered that dget does not properly escape arguments to external commands when processing .dsc and .changes files, allowing an attacker to execute arbitrary code. This issue is limited with the fix for CVE-2012-2241, and had already been fixed in version 2.10.73 due to changes to the code, without considering its security implications. - CVE-2012-3500 : Jim Meyering, Red Hat, discovered that annotate-output determines the name of temporary named pipes in a way that allows a local attacker to make it abort, leading to denial of service. Additionally, a regression in the exit code of debdiff introduced in DSA-2409-1 has been fixed.
    last seen2020-03-17
    modified2012-09-17
    plugin id62113
    published2012-09-17
    reporterThis script is Copyright (C) 2012-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/62113
    titleDebian DSA-2549-1 : devscripts - multiple vulnerabilities