Vulnerabilities > CVE-2016-1244 - Improper Input Validation vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
The extractTree function in unADF allows remote attackers to execute arbitrary code via shell metacharacters in a directory name in an adf file.
Vulnerable Configurations
Part | Description | Count |
---|---|---|
Application | 1 | |
OS | 2 |
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 family Debian Local Security Checks NASL id DEBIAN_DSA-3676.NASL description Tuomas Rasanen discovered two vulnerabilities in unADF, a tool to extract files from an Amiga Disk File dump (.adf) : - CVE-2016-1243 A stack-based buffer overflow in the function extractTree() might allow an attacker, with control on the content of a ADF file, to execute arbitrary code with the privileges of the program execution. - CVE-2016-1244 The unADF extractor creates the path in the destination via a mkdir in a system() call. Since there was no sanitization on the input of the filenames, an attacker can directly inject code in the pathnames of archived directories in an ADF file. last seen 2020-06-01 modified 2020-06-02 plugin id 93694 published 2016-09-26 reporter This script is Copyright (C) 2016-2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/93694 title Debian DSA-3676-1 : unadf - security update NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201804-20.NASL description The remote host is affected by the vulnerability described in GLSA-201804-20 (unADF: Remote code execution) Multiple vulnerabilities were discovered in unADF that can lead to remote code execution. Please review the CVE identifiers referenced below for details. Impact : A remote attacker, by enticing a user to process a specially crafted file, could execute arbitrary code. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 109234 published 2018-04-23 reporter This script is Copyright (C) 2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/109234 title GLSA-201804-20 : unADF: Remote code execution NASL family Debian Local Security Checks NASL id DEBIAN_DLA-631.NASL description It was discovered that there were two vulnerabilities in unadf, a tool to extract files from an Amiga Disk File dump (.adf) : - CVE-2016-1243: stack-based buffer overflow caused by blindly trusting on pathname lengths of archived files. Stack allocated buffer sysbuf was filled with sprintf() without any bounds checking in extracTree() function. - CVE-2016-1244: execution of unsanitized input Shell command used for creating directory paths was constructed by concatenating names of archived files to the end of the command string. For Debian 7 last seen 2020-03-17 modified 2016-09-21 plugin id 93612 published 2016-09-21 reporter This script is Copyright (C) 2016-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/93612 title Debian DLA-631-1 : unadf security update
References
- http://www.debian.org/security/2016/dsa-3676
- http://tmp.tjjr.fi/0001-Fix-unsafe-extraction-by-using-mkdir-instead-of-shel.patch
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=838248
- http://www.securityfocus.com/bid/93332
- https://security.gentoo.org/glsa/201804-20
- https://lists.debian.org/debian-lts-announce/2024/03/msg00015.html